energy in the atmosphere
DESCRIPTION
Energy in the Atmosphere. Aim: How is energy transferred to heat the atmosphere?. 1. Radiation. All forms of energy from the sun that travel through space Travel as electromagnetic waves Filtered by gases in the atm. Electromagnetic waves are classified by wavelength. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/1.jpg)
Energy in the Atmosphere
Aim: How is energy transferred to heat the atmosphere?
![Page 2: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/2.jpg)
1. Radiation
• All forms of energy from the sun that travel through space
• Travel as electromagnetic waves• Filtered by gases in the atm
![Page 3: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/3.jpg)
• Electromagnetic waves are classified by wavelength
![Page 4: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/4.jpg)
• Long Wavelength- low energy
• Short Wavelength- high energy
![Page 5: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/5.jpg)
Page 14 of ESRT!
![Page 6: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/6.jpg)
A.
-aka White Light-a mixture of all the colors seen in a rainbow-colors are due to different wavelengths
![Page 7: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/7.jpg)
Visible Light Spectrum
![Page 8: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/8.jpg)
Try this:
- Get colored pencils: - Red, Orange,Yellow,Green,Blue,Violet
– Use the spectroscope to look at the lights in the room and then out the window.
– Draw what you see:• Room’s light Sun’s light
![Page 9: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/9.jpg)
When you see the color white, all of the wavelengths of color are being reflected (bounced back) off the material and into your eyes.
When you see black, all of the wavelengths of color are being absorbed (taken into) into the material…nothing is reflected into your eyes.
![Page 10: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/10.jpg)
![Page 11: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/11.jpg)
B.
• -longer wavelength than visible light• -felt as heat
![Page 12: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/12.jpg)
C.
• shorter wavelength than visible light• does not produce heat• causes sunburn
![Page 13: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/13.jpg)
Which wavelength has more energy?
![Page 14: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/14.jpg)
2. What happens to sun’s energy?
• Referred to as INSOLATION
IN-incomingSOL-solarATION- radiation
![Page 15: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/15.jpg)
a. Scattering• Clouds, dust and gas molecules reflect
and bend rays sending them in all directions
• Causes sky to appear blue and sunsets to appear reddish
![Page 16: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/16.jpg)
![Page 17: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/17.jpg)
b. Reflection
• Determined by surface color and texture– Lighter smooth surfaces reflect more
• About 30% of solar radiation is reflected into space by Earth’s surface, atm, or clouds.
![Page 18: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/18.jpg)
• Albedo: ability of a surface to reflect light
• What colors will have a higher albedo?
Think: Why are ski goggles tinted like sunglasses?
![Page 19: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/19.jpg)
![Page 20: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/20.jpg)
![Page 21: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/21.jpg)
c. absorption
• Determined by surface color and texture– Darker rough surfaces absorb more
• About 50% of solar radiation is absorbed by Earth’s surface
![Page 22: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/22.jpg)
![Page 23: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/23.jpg)
Which do you think will heat up faster: Water or Sand?
Which do you think will cool off faster: Water of Sand?
![Page 24: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/24.jpg)
3. Conduction
• Molecules that are heated up move more quickly
• They come in contact with other molecules, transferring the energy
• Heat from Earth’s surface warms air molecules directly above
![Page 25: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/25.jpg)
4. Convection• Due to uneven heating of fluids• In atm, warm air expands, becomes less
dense, and rises
![Page 26: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/26.jpg)
![Page 27: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/27.jpg)
-Radiation travels to Earth and is absorbed
-Objects re-radiate energy back as infrared waves
-Atm gases trap heat energy keeping lower atm warm
5. Green House Effect
![Page 28: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/28.jpg)
It’s a GOOD thing!
a. The Earth’s greenhouse traps just enough heat to keep our planet a good temperature for life.
b. What would the Earth be like without the greenhouse effect?
![Page 29: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/29.jpg)
If we’re not careful…It’s a BAD thing!
c. Burning of fossil fuels adds carbon dioxide to the air.
d. The more greenhouse gases in the air, the more heat will be trapped and global warming will occur.
![Page 30: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/30.jpg)
• Explain what you may observe if you stand out in the sun for some time.
• How did the energy from the sun play a role in your experience?
![Page 31: Energy in the Atmosphere](https://reader036.vdocument.in/reader036/viewer/2022062222/56815d93550346895dcbaf39/html5/thumbnails/31.jpg)
Radiation
Conduction
Convection