1. The planet that rotates faster than any other planet in the solar system is?
a. Earth
b. Jupiter
c. Uranus
d. Pluto
2. Kepler’s law that describes how fast planets travel at different points in their orbits is called the law of?
a. ellipses
b. equal speeds
c. equal areas
d. periods
3. The hypothesis that states that the sun and the planets developed out of the same cloud of gas and dust is called the?
a. Copernicus hypothesis
b. solar hypothesis
c. nebular hypothesis
d. Galileo hypothesis
4. Explain (chose the best answer below) for how Earth’s early atmosphere differs from Earth’s atmosphere today.
a. The early atmosphere was very similar to the atmosphere we have now.
b. The early atmosphere mostly contained hydrogen and helium where today’s atmosphere is mostly oxygen and carbon dioxide.
c. Outgassing created ozone which is why we have global warming.
d. The early atmosphere contained mostly hydrogen and helium where today’s atmosphere is mostly nitrogen and oxygen.
5. Small bodies that join to form protoplanets in the early stages of the development of the solar system are?
a. planets
b. solar nebulas
c. plantesimals
d. gas giants
