Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Chap. 18 Vocabulary

Astronomy

TermDefinition
Astronomy The study of the universe
Year The time required for the Earth to orbit once around the sun
Month A division of the year that is based on the orbit of the moon around the Earth
Day The time required for Earth to rotate once on its axis
Telescope An instrument that collects electromagnetic radiation from the sky and concentrates it for better observation
Refracting Telescope A telescope that uses a set of lenses to gather and focus light from different objects
Reflecting Telescope A telescope that uses a curved mirror to gather and focus light from distant objects
Electromagnetic Spectrum All of the frequencies or wavelengths of electromagnetic radiation
Constellation A region of the sky that contains a recognizable star pattern and that is used to describe the location of objects in space
Zenith The point in the sky directly above an observer on Earth
Altitude The angle between an object in the sky and the horizon
Horizon The line where the Earth and the sky appear to meet
Light-year The distance that light travels in one year; about 9.46 trillion kilometers
Created by: JoJoJoH
Popular Earth Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards