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Do Now: Focused Free Write Look at the bottle of clear solution on my desk, what do you think it is? Does it have ENERGY?

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Presentation on theme: "Do Now: Focused Free Write Look at the bottle of clear solution on my desk, what do you think it is? Does it have ENERGY?"— Presentation transcript:

1 Do Now: Focused Free Write Look at the bottle of clear solution on my desk, what do you think it is? Does it have ENERGY?

2 Do Now: Take a lab from the Do Now Desk Get into your groups from last time! Get that data!

3 Do Now: Copy HW & Lab Pass UP
-Pass up Water Shoe box lab Monday: No HW Tuesday: Energy Homework Wednesday: Energy Transfer Practice Question in Packet on Page 7 Thursday: Specific Heat WS Friday: No Homework Extra Help: Thursday Morning

4 Unit 1: ENERGY Stop Monkey-N-ing around and Go Green already!
P.S. I’m Mookie the Monkey

5 Energy is the ability to do _______
What is ENERGY? Energy is the ability to do _______ Work

6 Work occurs when a _____ causes an object to _____ in the same direction as the force.
move

7

8 FORMS OF ENERGY Both basic states of energy, Kinetic and potential, can exist in many forms!

9 Kinetic THERMAL (HEAT)
The total ________ energy of the particles in matter. (molecular motion)

10 SOUND A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell vibrate

11 moving MECHANICAL Energy with which ______ objects perform work.
Ex: Wind, flowing water, using a hammer moving

12 A form of energy produced by the ________ of ________
ELECTRICITY A form of energy produced by the ________ of ________ movement electrons

13 CHEMICAL Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid bonds

14 Stored energy due to a change in the shape of an object. Ex:
STORED MECHANICAL ENERGY: Stored energy due to a change in the shape of an object. Ex: _______________ A stretched rubber band

15 STORED MECHANICAL ENERGY:

16 A form of _______ energy that moves in a ______. Ex: lamp, stars
LIGHT radiant A form of _______ energy that moves in a ______. Ex: lamp, stars wave

17 All forms of energy that come from the ______.
SOLAR ENERGY All forms of energy that come from the ______. SUN

18 Energy STORED in the ________ (center) of an atom. Ex: nuclear bombs
nucleus

19 Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers
GEOTHERMAL (HEAT) Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers Earth

20 All forms of energy can be classified as Kinetic or potential
All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?

21

22

23

24 1) Potential energy is stored energy due to and object’s _____________
Position

25 POTENTIAL ENERGY 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass gravitational height

26 POTENTIAL ENERGY 3) Massive objects have _____ potential energy than less massive objects more

27 POTENTIAL ENERGY 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation more

28 Do Now Pass up procedure for your signed test Take out Homework
Complete worksheet on Do Now desk

29 Kinetic is energy of ___________
KINETIC ENERGY Kinetic is energy of ___________ Motion

30 2) Kinetic depends on the _____ and the _______ of an object.
KINETIC ENERGY 2) Kinetic depends on the _____ and the _______ of an object. MASS SPEED

31 3) Faster objects have ____ kinetic energy than slower objects.
More

32 REVIEW QUESTONS: WHICH SKIIER HAS THE GREATEST KINETIC ENERGY? A B D C

33 WHICH SKIIER HAS THE GREATEST POTENTIAL ENERGY?
B D C

34 Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY?
ENERGY TRANSFORMATIONS Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY?

35 Law of Conservation of ENERGY: (same for mass)
Mass/ NRG ____________ Mass/ NRG ______________ Mass/ Energy can only __________ Can’t be made Can’t be destroyed Change form!!!

36 Gaining THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY
DURING ENERGY CHANGES, IF ONE BODYIS LOSING ENERGY, THE OTHER IS _______ ENERGY: Gaining THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY

37 THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY DURING ENERGY CHANGES,
IF ONE BODYIS LOSING ENERGY THE OTHER IS GAINING ENERGY: THE WAVE LOSES ENERGY: THE SAND GAINS ENERGY

38 DURING ENERGY CHANGES THE TOTAL ENERGY REMAINS THE SAME ENERGY ALWAYS FLOWS FROM HIGH TO LOW (source to sink)

39 THE ENERGY WILL FLOW FROM:
THE FLAME TO THE FINGER

40 ENERGY WILL FLOW FROM ICE THE FINGER TO THE ICE

41 THE LIQUID LOSES ENERGY AS THE ICE GAINS ENERGY

42 WHEN WILL THE EXCHANGE OF ENERGY STOP? WHEN EQUILIBRIUM IS REACHED THE LIQUID AND THE ICE REACH THE SAME TEMPERATURE

43 UNUSABLE ENERGY: Very often during the energy transformation process, some ____ energy is produced due to friction. This is wasted energy and is lost to the environment. heat

44 Example: A television changes electrical NRG into light and sound NRG
ENERGY TRANSFORMATIONS Example: A television changes electrical NRG into light and sound NRG

45 ENERGY TRANSFORMATIONS

46 Do Now Turn to page 7 in your note packet Take out “Energy HW”

47 Method’s of NRG transfer
Convection 1. __________________: Heated air rises through earth’s atmosphere. 2. __________________: An ice cube melts when dropped into a glass of warm water. 3. __________________: Light leaves the sun and 8 minutes later strikes earth. 4. __________________: You burn you tongue eating hot pizza. 5. __________________: Hot magma rises inside earth’s mantle, cool, and sinks. 6. __________________: A microwave oven heats soup. 7. __________________: A fireplace warming a room. Conduction Radiation Conduction Convection Radiation Convection

48 A B

49

50

51 Methods of Energy Transfer

52 high low Energy moves from regions of _________ concentration to ________ concentrations of energy.

53 _______ To Source sink

54 There are 3 methods of Energy Transfer
Radiation ConDuction ConVection

55 ConDuction

56 Explanation of Transfer
Direct contact (touch) Molecule To Molecule

57 -Conduction is a form of heat transfer by direct _______ of molecules
contact

58 -Conduction occurs fastest in _______
Best Medium for energy transfer -Conduction occurs fastest in _______ solids

59 -_______ are the best conductors of he heat energy.
metals

60 Examples Touching a hot surface Electricity

61 Do Now Take a Conduction lab & read:

62 Con ection

63 Explanation of Transfer
Energy transfer Due to Density differences

64 -Convection is a form of heat transfer that occurs by up and down motions of a _______ due to differences in ______ fluid density

65 -occurs ONLY in _____ which are liquids and gases!
Best Medium for energy transfer -occurs ONLY in _____ which are liquids and gases! fluids

66 Examples Hot air or water rising Volcanoes Lava lamp

67 convection

68 Radiatio

69 Explanation of Transfer
Electromagnetic (EM) waves that move Through a vacuum (empty space)

70 -radiation is the transfer of heat in _____.
waves

71 -Electromagnetic radiation travels at the speed of ______.
light

72 Best Medium for energy transfer
No medium needed

73 Examples Gamma X-rays UV Visible Infrared Microwave radio

74 Do Now: Name that type of heat transfer!
Convection! Conduction! Radiation! 74 74

75 Do Now: Focused Free Write (No HW tonight)
What is different about how each of the three popcorns? How were they made? Explain!

76 Do Now: In which direction does the air move?
A B

77

78 Do Now: In which direction does the energy move?
A B

79

80 Do Now: What will heat up faster
Or Or Or

81 1. HEAT: the energy of moving __________
HEAT NOTES 1. HEAT: the energy of moving __________ particles

82 2. HOT OBJECTS contain __________ heat than cold ones
HEAT NOTES 2. HOT OBJECTS contain __________ heat than cold ones more

83 3. All objects above __________ contain heat
HEAT NOTES 3. All objects above __________ contain heat Absolute zero

84 HEAT NOTES 4. Heat always flows from ______ objects to ______ objects until the objects reach _____ temperature. hotter cooler same

85 HEAT NOTES 5. The greater the difference in temperature between the two objects, the _________ heat is transferred. faster

86 TRANSFERRED BETWEEN OBJECTS?
HOW IS HEAT TRANSFERRED BETWEEN OBJECTS?

87 Heat Transfer at Work

88 Name that type of heat transfer!
Conduction! Radiation! Convection!

89 Do Now Read the article about Latent Heat while I set up the Demo
I will collect both labs tomorrow! Tomorrow report to large computer room in the Library

90 Heat Transfer across the globe

91 Do Now: HW on Desk Take a Lab from Do Now desk
Reflect on these two questions: 1) Would it take more energy to raise 5 g of water 5ºC or 20ºC? 2) Would it take more energy to raise 5 grams of water 10ºC or 100 grams of water 10ºC

92 Specific Heat Quantity of heat needed to raise One gram of any
Substance by 1 degree Celsius

93 Specific Heat The higher the Specific heat… The more energy is needed to raise the temperature

94

95 Measuring Specific Heat
Energy can be measures in many different ways. Typical units include: ____________________, _________________, & ___________________ Joules Watts calories

96 The term “Joule” is named after English Scientist James Prescott Joule who lived from 1818 to He discovered that Heat is a type of Energy! 1,000 joules =1 kilojoule = 1 Btu

97 Do Now! Read the did you know and complete practice questions 1-10!

98 What substance has the highest specific heat?Use your Reference Tables
Liquid water 4.18 Joules/gramºC

99 2. Why do metals have low specific heats?
They are solid 2. Why do metals have low specific heats?

100 3. Why are pans made of metals with low specific heats?
Because metals are good Conductors And have low specific heats. Therefore they will heat up quickly and cook your food faster.

101 water 4. Which would Take more energy to raise its Temperature, water
Or land? water

102 5. Which would Heat up and cool off Faster, land or water? land

103 Water (liquid) = 4.18 Iron (Fe) = 0.45 Copper (Cu) = 0.38
6. Which of these three substances will heat up fastest? Copper because it has the lowest specific heat

104 Do Now: 1) Describe the energy exchange occurs when liquid water at 0°C turns to ice at 0°C? The water loses energy The air around the water loses energy The ice gains energy. The air and the water both gain energy. 2) As heat energy is added to an open container of boiling water, the temperature of the boiling water will.. a. decrease b. increase c. remain the same

105 require the greatest amount of heat energy to raise its
7. Which material would require the greatest amount of heat energy to raise its temperature from 50C to 100 C? A. 10 grams of granite B. 10 grams of ice C. 10 grams of lead D. 10 grams of iron

106 if you wanted to cook your food quickly?
8. Which pan would you use if you wanted to cook your food quickly? copper iron Cp = 0.38 Cp = 0.45

107 require the greatest amount of heat energy to raise its
9. Which material would require the greatest amount of heat energy to raise its temperature from 50C to 100 C? A. granite B. ice C. lead D. iron

108 10. Calculate how many joules would be required to raise 3 grams of
water from 50 C to 65 C. 3g x15 ˚C x 4.18 J =188.1j g˚C

109

110

111 Do Now: Copy HW & Green house ditto on desk
-Pass up Phase change lab Monday: Study for exam Tuesday: Review book read pages 105 to 109 Answer Questions on page 110 Wednesday: Review Book read pages 116 to 118 Questions 39 to 48 on 119 Thursday: Insolation Worksheet Friday: No HW Extra Help: Monday after school

112 Do Now: Take out review sheet

113 Do Now: Copy HW & Lab Pass UP
-Pass up signed progress report Monday: Specific Heat HW Tuesday: Electromagnetic Spectrum HW Wednesday: Electromagnetic Spectrum WS #1 Thursday: Wave WS & Study Friday: Quiz Today Extra Help: Tuesday Morning

114 Do Now: Focused Free Write
What is different about how each of the three popcorns? How were they made? Explain!

115 Do Now: -Take a lab from the do now desk -Take out last night’s HW
-Complete the FOCUSED FREE WRITE on the front page of the lab: Which spoon would heat up faster when placed in a bowl of very hot soup, a wooden spoon or a metal spoon? Explain your answer in terms of specific heat, which spoon has the lower specific heat and why?

116 Take out your concept map and reading from last nights homework

117 Heat Transfer through radiation Lab
Find the symbol on the Top right corner of your Lab. Time to get in Lab Groups, Listen for directions..

118 Directions: -You will work in groups of four to complete this Lab.
-If your paper has an “A” in the top right corner, you and your partner will be monitoring the SAND AND WATER cups. -If your paper has a “B” in the top right corner, you and your partner will be monitoring the BLACK AND SILVER cans. -Both groups are responsible for both sets of data so it is important to communicate to each other.

119 Make a Prediction In the space provided on your lab, predict what which cup will heat up fastest, the cup of sand or the cup of water? Explain your choice!

120 Make a Prediction In the space provided on your lab, predict what which cup will heat up fastest, the black cup or the silver cup? Explain your choice!

121 Prepare to Begin One partner is responsible for turning on the heat lamp The other partner should take a temperature reading for each cup for time 0 in Degrees Celsius

122 Quick! Record Time 0 for your set up
Trade data Answer this question: Examine the lamp, what type of electromagnetic energy is the lamp producing? Two Minute Timer

123 Quick! Record Time 2 for your set up
Trade data Answer this question: 2. Define the word: specific heat Two Minute Timer

124 Quick! Record Time 4 for your set up
Trade data Answer this question: 3. What is the method of energy transfer responsible for the heat transfer between the lamp and the cans? Two Minute Timer

125 Quick! Record Time 6 for your set up
Trade data Answer this question: 4. Look at the data for sand and water which cup is heating up faster? Two Minute Timer

126 Quick! Record Time 8 for your set up
Trade data Answer this question: 5. Note which can is getting hotter faster, the black can or the silver can. Explain the data in your own words. Two Minute Timer

127 TURN OFF THE LAMP and MOVE IT AWAY FROM THE CANS/CUPS Half Way Done!!!
Without disturbing the positions of the cans, TURN OFF THE LAMP and MOVE IT AWAY FROM THE CANS/CUPS Half Way Done!!!

128 Quick! Record Time 10 for your set up
Trade data Answer this question: 6. Note which cup is hotter: The sand or the water. Based on this compare the density of the air over the sand to the density of the air over the water. Two Minute Timer

129 Quick! Record Time 12 for your set up
Trade data Answer this question: 7. Explain why the black can appears black based on last nights reading. Two Minute Timer

130 Quick! Record Time 14 for your set up
Trade data Answer this question: 8. Look at the data for sand and water which cup is cooling down up faster? Two Minute Timer

131 Quick! Record Time 16 for your set up
Trade data Answer this question: 9. Relate this experiment to real life. What type of surface on earth could be represented the silver can? The black can? Two Minute Timer

132 Quick! Record Time 18 for your set up
Trade data Answer this question: Compare your answers to questions 6 and 8, complete this sentence: “Good Absorbers are also good… _______________” Two Minute Timer

133 Quick! Record Time 20 for your set up
Trade data Answer this question: 11. Texture also plays a key role in the absorption of heat energy. Compare a rough surface and a smooth surface, which one will absorb more energy and why? Two Minute Timer

134 Quick! Record Time 22 for your set up
Trade data Answer this question: 12. By 3:00 P.M. on a summer day would the air be cooler over ocean or land? Two Minute Timer

135 Graph your data before you answer the questions!!!!

136 Conclusion: Write a short paragraph summarizing your understanding of the interaction between radiation and earth’s different surfaces. Use at least five of vocabulary words of these vocabulary words: Electromagnetic spectrum, visible light, prism, ozone, absorption, reflection, temperature, specific heat, reradiation, and infrared radiation.

137 -Pass up procedure for 3D topo lab
Do Now: HW on Desk -Pass up procedure for 3D topo lab - Reflect on these two questions: 1) Would it take more energy to raise 5 g of water 5ºC or 20ºC? 2) Would it take more energy to raise 5 grams of water 10ºC or 100 grams of water 10ºC

138 Do Now: Calculate the amount of energy in joules required to raise the temperature of 5 grams of granite from 82º C degrees to 100º C

139 PHASES OF Matter:

140 Matter is anything made of atoms and molecules.

141 A) SOLID B) LIQUID C) GAS

142 Solid Strong yes yes Liquid no yes Gas Not bonded no no Not bonded
Motion How is it Does it have Volume? (Kinetic bonded? A definite energy) shape? Solid Little K.E. Molecules vibrate Strong yes yes More K.E. Molecules move freely Liquid Not bonded rigidly no yes Most K.E. Molecules move fast Gas Not bonded no no

143

144

145 liquid solid gas liquid What are the changes of phase called? MELTING
FREEZING VAPORIZATION gas liquid CONDENSATION

146 FREEZING CONDENSATION DURING: LIQUID SOLID LIQUID GAS
2. ENERGY IS RELEASED (lost) DURING: FREEZING LIQUID SOLID CONDENSATION LIQUID GAS from higher K.E. to lower K.E.

147 MELTING VAPORIZATION DURING: SOLID LIQUID LIQUID GAS
3. ENERGY IS ABSORBED (gained) DURING: MELTING SOLID LIQUID VAPORIZATION LIQUID GAS from lower K.E To higher K.E.

148 Do Now -Take out lab, pass up procedure

149 Energy stored during a phase change is called
__________________ No change in temperature Latent heat

150 TAKE OUT YOUR EARTH SCIENCE REFERENCE TABLES

151 (Earth Science Reference Tables : front page)
Properties of Water

152 temp 0C HEAT ENERGY ADDED VAPORIZATION 100 CONDENSATION WATER ICE
Heating Curve of Water HEAT ENERGY ADDED MELT FREEZE VAPORIZATION CONDENSATION STEAM WATER ICE (Joules)

153 Do Now: -Take out sheet from do now desk and complete, this replaces yesterdays there was a typo -Take out Homework

154 Problem 1 : Does temperature change during a phase change
Problem 1 : Does temperature change during a phase change? ___________ Explain: NO!!!! The energy gained by boiling water or melting ice is stored as latent heat. Likewise this latent heat is released to the environment during condensation and freezing. This absorbed or released heat is used to change the phase not the temperature.

155 P∆= LH x Mass P∆= 334J/g x 20g P∆= 6680 J
Problem 2: How many Joules of heat energy must be added to 20 grams of ice at 0oC to melt it completely to liquid water at 0oC? Show All work.: P∆= LH x Mass P∆= 334J/g x 20g P∆= 6680 J

156 3. The most energy is released
during which phase change 4: The most energy is absorbed during which phase change: 5. Which phase has the most K.E.? condensation Vaporization GAS (STEAM)

157 Q= C x Mass x T∆ Q= 4.18J/g°C x 35g x 90°C Q= 13167 J
Problem 6: How many joules of heat (Q) energy must be added to 35 grams of liquid water to change the temperature from 10oC to 100oC water vapor? Is this a phase change problem or specific heat? Specific Heat (C) Q= C x Mass x T∆ Q= 4.18J/g°C x 35g x 90°C Q= J

158 P∆= LH x Mass P∆= 2260 J/g x 35g P∆= 79100 J
Problem 7 : How many joules of heat energy must be added to 35 grams to change liquid water at 100oC to water vapor at 100oC? Is this a phase change problem or specific heat? Phase Change (LH) P∆= LH x Mass P∆= 2260 J/g x 35g P∆= J

159 Q= C x Mass x T∆ Q= 2.00 J/g°C x 35g x 45°C Q= 3150 J
Problem 8: How many Joules of heat energy must be added to 35 grams of water vapor to change its temperature from 100oC to 145oC? Show all work. Is this a phase change problem or specific heat? Specific Heat (C) Q= C x Mass x T∆ Q= 2.00 J/g°C x 35g x 45°C Q= 3150 J

160 Problem 9: How many Joules of heat energy must be added to 35 grams of ice to change the temperature from 10oC to 145oC water vapor? How many steps are in this problem? Show All work.

161 MELTING / FREEZING 00 C SEE EARTH SCIENCE REFERENCE TABLE:
+ 334 J/gram Energy is absorbed Energy is released 00 C - 334 J/gram SEE EARTH SCIENCE REFERENCE TABLE:

162 VAPORIZATION/ CONDENSATION +2260 J/g 1000 C -2260 J/g
Energy is absorbed Energy is released VAPORIZATION/ CONDENSATION -2260 J/g

163 Electromagnetic Energy
-Quiz is still Friday… will cover everything up to the greenhouse effect. More details tomorrow. -No lunch club today, sorry! -Single period exam on Tuesday on Entire Energy Packet

164 Do Now Test is moved to Tuesday Do Now Worksheet on Desk
Extra-help on Monday after school Pass-up Procedure for phase change lab Take out Mookie the Monkey Note-packet

165 The Earth is always trying to achieve Equilibrium Energy is constantly being re-distributed flowing from source to sink

166 The Earth Receives Energy from two sources:

167 SUN

168 Radioactive Energy CORE

169 All matter radiates some _____________ _____________
Electromagnetic All matter radiates some _____________ _____________ Energy

170 ALL The sun emits energy in _____ wavelengths of the electromagnetic spectrum. Read about the Electromagnetic Spectrum.

171 ELECTROMAGNETIC SPECTRUM:
REFERENCE TABLE PAGE 14 gamma X ray Microwaves Ultra violet Infrared Radio waves Increasingwavelength Decreasingwavelength visible Violet Blue Green Yellow Orange Red

172 wavelength Each type of energy differs in its __________ visible
gamma X ray Microwaves Ultra violet Infrared Radio waves Increasingwavelength Decreasingwavelength visible Violet Blue Green Yellow Orange Red

173 A wavelength is the distance between two crests of the wave.
Read about Waves! A wavelength is the distance between two crests of the wave.

174 Frequency is defined as a number of cycles per unit time.

175

176 1. Explain the diagram above in no more than 3 sentences: ________________________________ __________________________________________________________________________ __________________________________________________________________________ 2. Which types of electromagnetic energy have the greatest and least amount of energy? (Highest temperatures vs. lowest temperatures) __________________________________________________________________________________________________________________________________________________________________ 3. How are the different types of electromagnetic energy distinguished from one another? 4. What types of electromagnetic energy are between Microwaves and X-Rays? 5. Explain how Gamma Rays and X-Rays are different and similar? 6. Why do you think you wear a lead shield when you have an X-Ray? 7. Based on the electromagnetic spectrum why do you think UV rays are dangerous to human health?

177 VISIBLE The Sun gives off light and heat in the form of _________________ and __________________ electromagnetic energy. UV

178 However, the short wavelengths (dangerous UV radiation) are mostly absorbed by the ozone so they don’t reach earth’s surface GAMMA OZONE

179 stratosphere The Ozone layer is found in the _________________ layer of the atmosphere.

180 visible Violet Blue Green Yellow Orange Red gamma X ray
gamma X ray Microwaves Ultra violet Infrared Radio waves Increasingwavelength Decreasingwavelength visible Violet Blue Green Yellow Orange Red

181 UV OZONE gamma, x-rays, SHORT WAVE LENGTHS ARE MOSTLY
ABSORBED by THE OZONE IN THE STRATOSPHERE gamma, x-rays, UV OZONE

182 This energy is absorbed by Earth’s surface, which in turn reradiates the energy in the form of heat called ________________ radiation infrared

183 OZONE VISIBLE LIGHT : PASSES THROUGH THE ATMOSPHERE WITH THE GREATEST INTENSITY

184

185 Sun emits all wavelengths Infrared: Heat energy that Earth re-radiates

186 visible Violet Blue Green Yellow Orange Red gamma X ray
gamma X ray Microwaves Ultra violet Infrared Radio waves Increasingwavelength Decreasingwavelength visible Violet Blue Green Yellow Orange Red

187 CO2 absorbs infrared CO2 CO2 H20 VAPOR How does too Much contribute to
Global warming? CO2 CO2 H20 VAPOR INFRARED METHANE GAS CO2 absorbs infrared

188 Do Now: Take a sheet from the do now desk.
-This is the answer key to the review packet handed out the first day of energy -Focused Free Write: Is temperature a measure of heat energy?

189

190 Interactions between Electromagnetic Energy & The Environment:

191 ABSORBTION - UV ABSORBED by REFLECTION SCATTERING REFRACTION
1. 2. 3. 4. 5. ABSORBTION - UV ABSORBED by OZONE IN STRATOSPHERE INFRARED ABSORBED BY CO2&H2O vapor methane, nitrous oxide REFLECTION SCATTERING REFRACTION TRANSMISSION - BY CLOUDS, ICE, SNOW & WATER - BY AEROSOLS, WATER DROPLETS, ICE CRYSTALS, AIR POLLUTANTS, DUST, POLLEN LIGHT IS BENT AS IT MOVES THROUGH VARIED DENSITIES WHEN ENERGY PASSES THROUGH A MEDIUM

192 1. ABSORPTION 2. REFLECTION 3.SCATTERING 4. REFRACTION 5. TRANSMISSION
Do Now: Turn to page 15 in your note packet, start filling in the blanks 1. ABSORPTION 2. REFLECTION 3.SCATTERING 4. REFRACTION 5. TRANSMISSION

193 half Less than ______of the incoming solar radiation is received by the Earth’s surface

194 Do Now Ditto On Do Now Desk Sit Quietly in your Assigned seats
Take out HW Worksheet Smile its Friday!

195 Surface properties of the Earth and Absorption of Energy:

196 Color: Texture: Reflection vs. Absorption & Radiation
Light (white) reflects dark (black) absorbs Rough surface absorbs smooth surface reflects

197 Absorption Good absorbers are also good re-radiators.
What type of surface is the best absorber? What type of surface is the best reflector of radiation? Dark Rough Pavement warms before grassy lawns. Light Shiny Flat Snow and Ice reflect insolation and remain cold.

198

199 ELECTROMAGNETIC SPECTRUM: LAB
gamma X ray Microwaves Ultra violet Infrared Radio waves Increasingwavelength Decreasingwavelength visible Violet Blue Green Yellow Orange Red

200 Spectroscope Lab

201 Do Now on Desk Aim: Greenhouse Effect Phase change lab due tomorrow
Review Packet due tomorrow Energy Exam next Tuesday Extra Help Today After School

202 Greenhouse Effect Short wavelength visible light enters the greenhouse, is absorbed, then re-radiated as longer wavelength infrared (heat). The glass traps the infrared.

203 increase What is Global Warming?
An ___________ in the Earth’s Average surface air temperature

204 THE GREENHOUSE EFFECT

205 THE GREENHOUSE EFFECT Energy absorbed Incoming is Short wave
HEAT IS TRAPPED BY THE GLASS OF THE GREENHOUSE Incoming is Short wave Ex: Visible light outgoing is Longer wave Infrared Energy absorbed

206 Visible light absorbed
Short wave radiation like ___________ passes through the glass of a greenhouse and is _______________ by the objects inside the greenhouse. Visible light absorbed

207 These objects __________________ the energy as ____________________, which get reflected back into the greenhouse and warms the air. reradiate infrared Long Wave Radiation

208 In Earth’s atmosphere, there are many gases that act like the glass of a greenhouse and ________ long-wave radiation, keeping it in the Earth’s Atmosphere. These are known as… trap

209 Greenhouse Gases!

210 Greenhouse Effect CO2and H2O absorb infrared that is re-radiated from the surface of the Earth. Therefore, holding that heat in the atmosphere and raising the global temperature.

211 H20 VAPOR CO2 Ozone CFCs What are the Greenhouse gases? METHANE GAS
INFRARED Ozone CFCs

212 Without some greenhouse gases, the Earth would be too _____________ for us to survive. But an overload of greenhouse gases creates a problem as well! cold

213 CO2 absorbs infrared CO2 CO2 H20 VAPOR How does too Much contribute to
Global warming? CO2 CO2 H20 VAPOR INFRARED METHANE GAS CO2 absorbs infrared

214 Greenhouse Effect What human activities contribute to CO2 production and an increase in the greenhouse effect? Burning of fossil fuels Global deforestation

215 If present trends continue possible effects may include
Rising sea levels due to melting polar ice caps; Increasing frequency and severity of storms and hurricanes; More frequent heat waves and droughts; and Relocation of major crop growing areas.

216 c Which of the following best represents the type of energy
received by the Earth and the re-emitted by the Earth? A B c

217 c Which of the following best represents the type of energy
received by the Earth and the re-emitted by the Earth? A B c

218 WHICH TYPE OF ENERGY IS REPRESENTED BY THE RADIATION AT B? B A
INSOLATION C) VISIBLE LIGHT B) ULTRAVIOLET B A D) INFRARED ENERGY

219 WHICH TYPE OF ENERGY IS REPRESENTED BY THE RADIATION AT B? B A
INSOLATION C) VISIBLE LIGHT B) ULTRAVIOLET B A D) INFRARED ENERGY

220 An energy resource that is _______________________________________.
What is a NON-RENEWABLE RESOURCE? An energy resource that is _______________________________________. Being used faster than Earth Produces it

221 Examples: __________________
What is a NON-RENEWABLE RESOURCE? Examples: __________________ Fossil Fuels, minerals

222 What is a NON-RENEWABLE RESOURCE?
To make our non-renewable resources last longer we can _____________________________________________. Reduce Reuse Recycle

223 An energy resource that is _______________________________________.
What is a RENEWABLE RESOURCE? An energy resource that is _______________________________________. Earth supplies faster than we use it “unlimited”

224 Examples: _______________________________
What is a RENEWABLE RESOURCE? Examples: _______________________________ Solar, wind, biomass (trees etc..)

225 What is a RENEWABLE RESOURCE?
A renewable resource produces less _________ (substance that can harm living things and/or the environment pollution

226 Look at the pie graph!!! Only 7% of our energy consumption is from renewable resources!!! Try to make little changes in your life to reduce your dependence on Non-Renewable Resources! What do you plan to do?

227


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