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


part 3 rg 1

What is the contribution Nicholas Copernicus made? Proposes heliocentric theory On the Revolutions of the Heavenly Spheres
Nicholas Copernicus Challenge to traditional way of perceiving universe Disproves the theory of geocentric universe
What is the contribution Tycho Brahe made? Builds observatory, observes comet that passes through the "crystals" between the planets and crystalline spheres
Tycho Brahe Challenge to traditional way of perceiving the universe? disproves the crystalline sphere theory
What is the contribution Johannes Kepler made? Discovers that planets move in elliptical orbits
Johannes Kepler Challenge to traditional way of perceiving the universe Dispels the idea that planets move in perfect circular orbits
What is the contribution Galileo Galilei made? Observations made through the telescope in The Starry Messenger reveal that the celestial bodies have imperfections(moon has craters, Jupiter has moons, sun has spots)
Galileo Gallilei Challenge to traditional way of perceiving the universe Dispels idea that heavenly bodies are perfect/unblemished
What is the contribution Sir Isaac Newton made? Formulates mechanical laws of motion to explain why planets orbit rather than fly into space or crash into the sun in Principia Mathematica (1687)
Sir Isaac Newton Challenge to traditional way of perceiving the universe his idea of universal laws of motion dispels the idea that there is a separate set of laws that govern the heavens and the Earth
Created by: kingj5490