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A brilliant red sunset produced by the process of scattering At sunrise and sunset, when the white beam of sunlight must pass through the a thick portion.

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Presentation on theme: "A brilliant red sunset produced by the process of scattering At sunrise and sunset, when the white beam of sunlight must pass through the a thick portion."— Presentation transcript:

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2 A brilliant red sunset produced by the process of scattering At sunrise and sunset, when the white beam of sunlight must pass through the a thick portion of the atmosphere, scattering by air molecules removes the blue light, leaving the longer wavelengths of red, orange and yellow to pass on through

3 On the average, of all the solar energy that reaches the earth's atmosphere annually, about 30 percent (30/100) is reflected and scattered back to space, giving the earth and its atmosphere an albedo of 30 percent. Of the remaining solar energy, about 19 percent is absorbed by the atmosphere and clouds, and 51 percent is absorbed at the surface.

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6 The earth-atmosphere energy balance. Numbers represent approximations based on surface observations and satellite data. While the actual value of each process may vary by several percent, it is the relative size of the numbers that is important.

7 Aurora – caused by charged particles from the sun interacting with the atmosphere. Solar wind collides with atmospheric gases. Gases get “excited” and emit light aurora borealis in NH and aurora australis in SH

8 TYPES OF ENERGY Mechanical, Electromagnetic, Electrical, Chemical and Thermal

9 What is Mechanical Energy? o Energy due to a object’s motion (kinetic) or position (potential). The bowling ball has mechanical energy. When the ball strikes the pins, mechanical energy is transferred to the pins!

10 Examples of Mechanical Energy

11 What is Electromagnetic Energy? o Light energy o Includes energy from gamma rays, xrays, ultraviolet rays, visible light, infrared rays, microwave and radio bands

12 What is Electrical Energy? o Energy caused by the movement of electrons o Easily transported through power lines and converted into other forms of energy

13 What is Chemical Energy? o Energy that is available for release from chemical reactions. The chemical bonds in a matchstick store energy that is transformed into thermal energy when the match is struck.

14 Examples of Chemical Energy

15 What is Thermal Energy? o Heat energy o The heat energy of an object determines how active its atoms are. A hot object is one whose atoms and molecules are excited and show rapid movement. A cooler object's molecules and atoms will show less movement.

16 QUIZ TIME! What type of energy cooks food in a microwave oven? ELECTROMAGNETIC ENERGY What type of energy is the spinning plate inside of a microwave oven? MECHANICAL ENERGY

17 QUIZ TIME! Electrical energy is transported to your house through power lines. When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy? MECHANICAL ENERGY

18 QUIZ TIME! What energy transformation occurs when an electric lamp is turned on? ELECTRICAL ENERGY  ELECTROMAGNETIC ENERGY

19 What types of energy are shown below? Mechanical and Thermal Energy (Don’t forget friction)

20 What type of energy is shown below? Chemical Energy

21 What types of energy are shown below? Electrical, Mechanical and Electromagnetic Energy

22 What type of energy is shown below? Chemical Energy (yummy)

23 What type of energy is shown below? Thermal Energy

24 Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving. You should have 5 different types of energy.

25 Energy Transfer Chemical Electrical Sound (mechanical) Light (Electromagnetic) Thermal Mechanical


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