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

unit 8 part two

QuestionAnswer
sidereal month one complete revolution of the moon around the earth; 27 1/3 days
phases of the moon changes in the amount of the illuminated surface of the moon as seen from the earth, cyclic over a 29 1/2 day period
synodic month (lunar month) average time between successive new or full moons, 29 days, 12 hours, 44 minutes
spring tides tides of maximum tidal range occurring at new and full moon phases
neap tides tides of the smallest tidal range occurring at the quarter phases of the moon
umbra completely dark portion of the shadow cast by the earth, moon, or the sun during an eclipse
penumbra partial shadow cast by the earth, moon, or sun during an eclipse
lunar eclipse when the moon passes into the shadow of the earth
solar eclipse eclipse that occurs when the moons umbra reaches the earths surface
annular eclipse eclipse that occurs when the moon is too far from the earth for the umbra of its shadow to reach the earth
solar system orbiting system of the earth, planets, and moons with the sun as the center of revolution
geocentric model early attempt to explain the motions of celestial objects using the earth as a stationary center for orbiting celestial objects
heliocentric model modern attempt to explain the motions of celestial objects using the sun as the stationary center for the orbiting celestial objects and fixed star positions
epicycle smaller secondary orbit off a main orbit
terrestrial planets earth like, having rocky cores; including mercury, venus, earth, and mars
asteroid belt numerous small celestial bodies that revolve around the sun
meteor bright trail or streak that appears in the sky when a meteoroid is heated to incandescence by friction with the earths atmospheres
fireball (bolide) appearing to be as a bright or brighter than the brightest planets
comet celestial body, observed only in that part of its orbit that is relatively close to the sun
meteorite stony or metallic mass of matter that has fallen to the earth's surface from outer space
nuclear fusion when the high energy of atomic nuclei cause light elements come toghether to form heavier ones
h-r diagram graph developed by hertzsprung and russel useful in comparing luminosity and temperature of the stars
sunspots relatively cool dark spot appearing periodically on the surface of the sun in groups and are associated with strong magnetic fields
light speed 300,000 km/sec
light year unut of measurment equal to the distance light travels in one year; 10 trillion km
milky way galaxy spiral assembly of stars, home to the sun and solar system
cluster group of galaxies
spectroscope used to study the light from celestial objects
spectral lines lines corresponding to various wavelengths seen in an elements spectrum
doppler shift apparent change in wavelength of light caused by relative motion of the source
hubble telescope an American satellite based telescope used for deep space study; launched in 1990
red shift spectral lines move toward the red end of the spectrum from a celestial object moving away from the earth
Created by: ali16basketball
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