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.
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
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

Unit 2 Astronomy P1

astronomy the science that deals with the material universe beyond the earths atmosphere
heliocentric measured or considered as being seen from the center of the sun
ellipse geometric
astronomical unit (AU) a unit of length, equal to the mean distanceof the earth from the sun
rotation turning or spining on an axis
revolution the orbiting of one heavenly body around another
perihelion the point in the orbit of a planet or comet at which it is NEAREST to the sun
aphelion the point in the orbit of a planet or comet at which it is FARTHEST from the sun
phases of the moon
solar eclipse the obstruction of the light of the SUN by the intervention of the moon between it and the earth
lunar eclipse the obstruction of the light of the MOON by the intervention of the earth between it and the sun
terrestrial planet inner planets- smaller planets that are closest to the sun
jovian planet any of the four large planets; Jupiter, Saturn, Uranus, and Neptune
asteroid a piece of rock mostly found in the astroid belt between orbits of Mars and Jupiter
comet space object made of dust and rock particles that forms a bright coma as it approaches the sun
meteoroid any of the small bodies, often remenants of comets, traveling through space
meteor a meteoroid that has entered the earths atmosphere
meteorite a mass of stone or metal that has reached the earth from outer space
electronmagmetic spectrum the complete range of electromagnetic radiation from the longest waves to the shortest waves
photon a quantum of electromagnetic radiation, usually considered as an elementry particle that is its own antiparticleand
doppler effect a change in frequency of electromagnetic radiation. the shift is to higher frequencieswhen the source approachesand to lower frequencies when it recedes.
refracting telescope uses convex lenses
reflecting telescope uses a cocave mirror to direct light from the base of the telescope back toward the eyepiece lens
radio telescope uses radiowaves to create images
hubble telescope reflecting space telescope (built in 1990)
space shuttle reuseable spacecraft that can carry cargo, astronauts, ans satelites to and from space
Created by: 3082817