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
share
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

Universe Theories

Theories of the Universe

QuestionAnswer
Heliocentric Model belief that the sun was in the middle of the universe; the model that we currently believe
Geocentric Model belief that the Earth was in the middle of the universe
How are the Heliocentric and Geocentric Models alike? They both believe that the planets are moving. They both believe the moon orbits Earth. They are both theories.
Big Bang Theory belief that the universe began (formed) as a large explosion of matter and energy that continues to expand today
Put these in order from smallest to largest: Universe, Earth, Galaxy Earth, Galaxy, Universe
According to the Big Bang Theory, how long ago was our universe created? 14 billion years ago
name of our galaxy Milky Way
three types of galaxies spiral, elliptical, and irregular
type of galaxy that we are spiral
where we are located in our galaxy in the outer arm called Orion
gravity the force that causes the planets to remain in orbit around the sun, the force that pulls two objects toward each other, and the force that keeps us from floating away from the ground
theory explanation or model that is backed by scientific evidence; a theory can change
What can cause a theory to change? A scientist can discover new information.
How did Galileo observe the solar system? with a telescope
How do the planets orbit the sun? in an elliptical motion
Created by: Nisey1996
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