The term for the Earth is the center of the universe

• heliocentric

• earthcentric

• geocentric

• elliptical

To break free from a gravitational field, such as one on a planet, you must obtain this

• orbital velocity

• escape velocity

• speed velocity

• earth velocity

Which of Newton's laws illustrates how an asteroid moves through space?

• 1st

• 2nd

• 3rd

• 4th

For every action there is an equal and opposite reaction is Newton's ___ law.

• 1st

• 2nd

• 3rd

• 4th

What force governs all motions in the universe?

• air resistance

• friction

• inertia

• gravity

The term for when the sun is the center of the solar system

• geocentric

• elliptical

• heliocentric

• earthcentric

Kepler knew his laws worked mathematically, but he didn't know why. Which scientist figured out the why to Kepler's how?

• Galileo

• Ptolemy

• Brahe

• Newton

The scientist(s) that had a geocentric view of the heavens was (were) __. Check all that apply.

• Aristotle

• Ptolemy

• Brahe

• Galileo

• Kepler

Ptolemy used _____ model to try to explain retrograde motion.

• Aristarchus’

• Aristotle’s

• Brahe's

• Kepler's

After Brahe died, ____ used his detailed observations of the night sky to derive his laws

• Brahe

• Einstein

• Galileo

• Kepler

• Newton