Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chapter 2-1 Science

7th Grade Earth Science Energy in Earth's Atmosphere

TermDefinition
Electromagnetic Waves Waves that transfer electric and magnetic energy through the vacuum of space.
Radiation The direct transfer of energy by electromagnetic waves.
Infrared Radiation Electromagnetic waves with wavelengths that are longer than visible light but shorter than microwaves
Ultraviolet Radiation Electromagnetic waves with wavelengths that are shorter than visible light but longer than X-rays. Shorter than violet light.
Scattering Reflection of light in all directions
Greenhouse Effect The process by which heat is trapped in the atmosphere by gases that form a "blanket" around Earth.
2. Electromagnetic waves 2. Energy Travels from the sun as ________________ ________________.
UV Radiation Sunburns are caused by ___ __________________.
2. Infrared Radiation 2. When Earth's surface is heated it radiates some of the energy back into the atmosphere as infrared radiation.
Visible Light Visible light includes all of the colors that you see in a rainbow: red, orange, yellow, green, blue, and violet. Red and orange light have the longest wavelengths, while blue and violet have shorter wavelengths.
2. Ultraviolet radiation 2. What type of radiation has wavelengths that are shorter than visible light?
Why are sunsets red? As the sun gets closer to the earth, the wavelengths of visible light are longer. As sunlight disappears visible light comes in shorter wavelengths showing colors like blue and purple.
50% of the sun's energy What percent is absorbed by Earth's surface? This energy heats the land and water.
25% of sunlight What percent of incoming sunlight is reflected by clouds, dust, and gases in the air.
5% What percent of sunlight is reflected by the surface back into the atmosphere?
20% What percent of sunlight is absorbed by gases and particles in the atmosphere.
Created by: dsimmons