1. Do Now 1. Energy is the ability to do work. 2. Does space have energy
Do Now 1. Energy is the ability to do work. 2. Does space have energy? Even though space is cold and dark, it is flooded by ___ All stars in the universe produce ___ Planets and ___ reflect that energy back, glowing in the darkness. Also everything in space is in ___ , so there is also kinetic energy.
electromagnetic energy
energy
moons
motion

2. Do Now 1. Energy is the ability to do work. 2
Do Now 1. Energy is the ability to do work. 2. Does space have energy (stars, planets, moons)?
Stars burn up, moons glow bright and planets rotate and revolve around the Sun.

3. Do Now Energy is the ability to do work
Do Now Energy is the ability to do work. Energy can be found in many things, and takes many forms.

4. The two factors that affect kinetic energy are ___ and ___ .
List the object that has the greatest KE when rolled, diet cola or regular cola. Explain.
The two factors that affect potential energy are ___ and ___
Where at home would you put an AC to have the greatest PE?
mass
speed
Regular cola because
the greater the mass,
the higher the KE.
height
mass
The greater the height,
the higher the PE:
attic

5. Gaining speed at downswing

6. KE= downswing, PE= upswing

7. Do Now
In Gizmo, we found out that the energy in the pendulum is fast at point ___ (bottom swing) and slows down at points ___ and ___ (upswing).
This type of change where energy goes from one form, ___ energy (pts A and C) to another form ___ energy (pt B), and where energy is never lost is called “the principle of ___ of energy”.

8. 1. In Gizmo, we found out that the energy in the pendulum is fast at point ___ (bottom swing) and slows down at points ___ and ___ (upswing). B
A C

9. 2. This type of change where energy goes from one form, ___ energy (pts A and C) to another form ___ energy (pt B), and where energy is never lost is called “The Principle of ___ of Energy”.
potential
kinetic
Conservation
PE PE KE

10. Do Now 1. List in sequence that shows an increase in kinetic energy. 2
Do Now 1. List in sequence that shows an increase in kinetic energy. 2. List in sequence that shows an increase in potential energy.
Top to bottom:
A, G,
B, F,
C, E, D
Bottom to top: D,
E, C,
F, B,
G, A

11. When the pendulum is on an upswing, the potential energy ___ .
Do Now
Explain how the motion of a swing illustrates the transferring of energy between potential and kinetic energy.
When the pendulum is on an upswing, the potential energy ___
When the pendulum swings down the ___ changes to ___.
At the downswing, the ___ is increases.
When the pendulum swings up, the ___ changes to ___.
increases PE KE KE KE PE

12. Do Now 1. How can a pebble on a hill have the same potential energy as a stone? 2. Explain what happens to the kinetic energy of a skateboard that is coasting along a flat surface, slows down, and comes to a stop.
Same PE: pebble on a hill =
stone at ground level

13. The KE of the skate is converted into thermal energy by friction.
2. Explain what happens to the kinetic energy of a skateboard that is coasting along a flat surface, slows down, and comes to a stop.
The KE of the skate is converted into thermal energy by friction.

14. Do Now 1. ___ is what we call energy that comes from heat. 2
Do Now 1. ___ is what we call energy that comes from heat. 2. What happens when you pour milk into hot chocolate? The hot chocolate becomes ___ because it lost ___ to the milk.
Thermal energy
cooler
thermal energy

15. 3. Identify all forms of energy as the girl sweats from jumping rope.

16. 3. Identify all forms of energy as the girl sweats from jumping rope.
a. As the rope swings up-
b. As the rope swings down-
c. The girl becomes hot-
d. The girl starts to sweat- PE KE
thermal energy
chemical energy

17. A swimming pool at 30°C is at a lower temperature than a cup of tea at 80°C. But the swimming pool contains more water, so it stores more thermal energy than the cup of tea. To boil water we must increase its temperature to 100°C. It takes longer to boil a large beaker of water than a small beaker because the large beaker contains more water and needs more thermal energy to reach 100°C.

18. Do Now
How can a swimming pool of 75 degrees F have the same thermal energy as a cup of hot coffee at 100 degrees F?
2. Which takes longer to boil, a large or a small beaker of water?
Because the pool store more
thermal energy.
It takes longer to boil the large beaker because
it takes more water and needs
more thermal energy to reach its boiling point.

19. Do now 1. Draw a Venn diagram and write the two factors that affect each form of energy.
KE PE Thermal energy

20. contract (come together)
Do Now- 1. When heat is removed, molecules ___ When heat is added, molecules ___
contract (come together)
expand (spread out)
Look at mysteries of science #2 for answer

21. 3. Which picture shows that heat is added ?
Glass molecules become hot and then expand
Glass molecules become cooler and then contract

22. 4x. Which picture shows that heat is added?
Iron molecules become cooler and then contract
Iron molecules become hot and then expand

23. 5x. Why is the jar lid easier to open after using hot water?
The hot water increases the thermal energy of the metal lid and therefore makes it expand and loosen up.

24. 6. However, water has a unique property: when water becomes cold, the molecules ___ and when water becomes hot, the molecules ___
expand
contract
At room temperature
In freezer

25. 7. We can see that glass breaks as water molecules ___ when it freezes .
expand
In freezer

26. Chemical energy
1. ___ is energy stored in bonds of chemical compounds (atoms and molecules).
2. Chemical energy is released in a chemical reaction, often in the form of ___ .
heat

27. 3. Identify which are examples of chemical energy
3. Identify which are examples of chemical energy. Write the word “chemical energy” or “not” after each statement.
Matchstick is lit
Plants convert sunlight into sugar
Water freezing into ice
A person breathing
Melted wax
=chemical energy
=chemical energy
=chemical energy

28. “Nature of E” worksheet
16a. Chemical energy-
b. Thermal energy-
c. Light energy-
18. Radiant energy-

29. WORD BANK (five words): 19. Radiant Chemical Thermal PE KE 20a
WORD BANK (five words): 19. Radiant Chemical Thermal PE KE 20a. (three answers)- b. (one answer)- c. (two answers)- d. (one answer)- e. (two answers)- f. (two answers)- g. (two answers)-

30. Do now 1. ___ is the process in which sunlight is converted by chemical energy to make sugars for survival.
Photosynthesis

31. chlorophyll
2. Photosynthesis takes place in the ___ which is located on the underside of the leaves. Each dot is a chlorophyll.

32. 3. ___ is also located in plant and animal cells.
4. It uses a lot of ___ in order to make each cell grow and operate normally.
Mitochondria
chemical energy

33. Worksheet to chemical energy label and color chloroplasts and mitochondria

34. Label four parts: stroma, outer membrane, lamella and granum
Light blue
Light green
Dark green
brown

35. Label two parts: thylakoid and granum
red
green

36. Label three parts: matrix, outer membrane, cristae
red
pink
yellow

37. 1. Plant cells 2. Sugar 3. Photosynthesis 4. Carbon dioxide and water 5. carbon dioxide and oxygen thousands

38. Do Now
Identify the different types of energy that you saw in the video.
Kinetic Energy=
Potential Energy=
Thermal Energy=
Chemical Energy=

39. Crossword puzzle: (three words not used) kinetic
Crossword puzzle: (three words not used) kinetic KineticEnergy chemical ChemicalEnergy thermal ThermalEnergy potential PotentialEnergy height molecules hotter conservation higher expand speed contract mass oxygen chloroplasts transferred mitochondria transformed

40. 1. Identify the different types of energy that you see in space. a
1. Identify the different types of energy that you see in space. a. Kinetic Energy= rotating planets, meteorite crashed down, spaceship lifting up, astronauts floating in space b. Potential Energy= the sun stays still, the spaceship was still before it lifted c. Thermal Energy= the hot sun, rocket fuel burning, the stars burning actually, volcanoes erupting on Venus d. Chemical Energy= rocket fuel evaporates into gas, the crater burns into ash, astronauts inhale oxygen and exhale co2

41. Do Now-
Identify the different types of energy that has been applied before you came to this class.
Kinetic Energy=
Potential Energy=
Thermal Energy=
Chemical Energy=

42. 1. Identify the different types of energy that has been applied before you came to this class. a. Kinetic Energy= a boy shaking his bookbag. I am walking to school. I was kicking a ball in gym.

43. b. Potential Energy= a person falling his seat. Standing on the roof
b. Potential Energy= a person falling his seat. Standing on the roof. Im standing in line at lunch time. c. Thermal Energy= the school oven is turned on. I feel cold air from the vent. Running in gym class, I get hot. d. Chemical Energy= the light bulb burns. Foam comes from wet soap. Cooked pizza

44. 1. Identify the different types of energy that has been applied before you came to this class. a. Kinetic Energy= the car moving, when we are walking to class, talking to friends b. Potential Energy= sitting on a chair, slept on my bed, the Great Wall of China project displayed in the hallway c. Thermal Energy= drinking hot cocoa for breakfast, my bed is warm, the heat in the car as you are driving to school d. Chemical Energy= my breakfasted digested in my stomach, I was breathing in oxygen and breathing out CO2, the car gasoline burns into smoke

45. 25. Chemical energy is converted into thermal energy by your body.
Nature of Energy, pg 716
23. At high speed, both cars have more KE. This greater KE will result in more damages.
24. The chemical energy in the wood is transformed into thermal energy and radiant energy.
25. Chemical energy is converted into thermal energy by your body.

46. 26. The vase with the larger mass would have more PE.
27. The golf ball has less mass so it must be moving faster.
27a. If they move at the same speed, the bowling ball has more KE.

47. 1. D 2. A 3. D 4. A G F C A 8. B D 9. E A 10. E D

48. Do Now
1. What forms of energy do the chloroplasts in the plant leaves undergo? Explain.
Potential energy =
The plant stays still.
The leaves of plants move towards the sunlight.
Kinetic energy =
Thermal energy =
The sun’s rays heats up the plant.
Chemical energy =
The rays are converted to food for the plant by
photosynthesis