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

Chapter 4 Science

Lesson 1 Telescopes

electromagnetic radiation the energy transferred through space by electromagnetic waves
visible light electromagnetic radiation that can be seen with the unaided eye
wavelength the distance between the crest of one wave and the crest of the next wave
spectrum the range of wavelengths of electromagnetic waves
telescope a n optical instrument that forms enlarged images of distant objects
optical telescope a telescope that uses lenses or mirrors to collect and focus visible light
refracting telescope a telescope that uses a curved mirror to collect and focus light
convex lens a lens that is thinker in the center than at the edges
reflecting telescope a telescope that uses a curved mirror to collect and focus light
observatory a building that contains one or more telescopes
radio telescope a device used to detect radio waves from objects in space
Created by: dguilliams