Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

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.

Remove ads
Don't know
remaining cards
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:
restart all cards

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

ch 26 science vocab

science ch 26 sec 1/ freshman com/ Tyler Fisher

astronomy the scientific study of the universe
galaxy a collection of stars, dust, and gas bound together by gravity
astronomical unit the average distance between the Earth and the sun; approximately 150 kilometers
electromagnetic spectrum all of the frequencies or wavelengths of electromagnetic radiation
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 distant objects
reflecting telescope a telescope that uses a curved mirror to gather and focus light from distant objects
Created by: 100001970150319