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

Earth in Space

TermDefinition
Rotation The act of rotating around an axis or center.
Revolution The orbital motion about a point, especially as distinguished from axial rotation.
Orbit In astronomy, the path followed by an object after revolving around another object.
Geocentric theory A belief that the Earth is the center of the universe.
Heliocentric theory A belief that the Sun is the center of the universe.
Astronomy The science of observing the sky.
Solar System The sun, its planets, and all other objects in orbit around the sun or planets.
Telescope A device built to observe distant objects, like stars, by making them appear closer.
Comet A loose collection of ice, dust and small rocky particles with a long, narrow orbit of the sun.
Gravity The force that pulls objects toward one another.
Astronomer A scientist who studies the universe beyond earth.
N.A.S.A. An acronym for the National Aeronautic and Space Administration.
Axis Earth's imaginary straight line that passes through the North pole, the center of earth, and the south pole. Can be on other planets also.
Tilt To not be straight, leaned in one direction or another.
Meteors A streak of light in the sky produced by the burning of a meteoroid in earth's atmosphere.Not a shooting star, but this.
Constellation An imaginary patter of stars in the sky.
Vernal equinox March 20 or 21, when the amount of time in the day is equal to the amount of time in the night.
Autumnal equinox September 22, when the Sun's beams are hitting the equator, causing the amount of time in the day is equal to the amount of time in the night, is in Fall.
Summer solstice June 21, when the sun's beams are more on the northern hemisphere, causing it to be Summer there. The Sun is hitting its highest point on Earth.
Winter solstice December 21, when the Sun's beams are more on the southern hemisphere, which is when the Sun is hitting its lowest position, is in Winter.
Created by: 1964110084
Popular 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