B)
C)
Chapter 10 test
1. The star at the center of our solar system is the _______________.
2. A small planet-like body that orbits the Earth is a _______________.
3. A large object that orbits a star is called a _________________.
4. A huge burning ball of superheated gas is a ________________. We have several.
5. A large system of stars, gas, and dust is called a _______________.
6. Everything that exists in space is called the __________________.
7. Earth's path as it moves around the sun is called its _________________.
8. An imaginary line that goes through both poles is called the ________________.
Word Bank
axis galaxy moon orbit
planet star sun universe
9. Kevin is describing the way the moon appears to change shape. What term should he use to describe the different phases of the moon?
A) comets b) constellations C) phases D) satellites
10. How long does it take the Earth to rotate around its axis?
A) 1 hour B) 365 days C) 1 day D) 1 year
11. Alana saw a full moon last night. In two weeks, what will she see?
A)
B)
C)
12. Willa is preparing a report about the outer planets. Which planet should she include in her report?
A) Mars B) Mercury C) Saturn D) Venus
13. Which planet is not an outer planet?
A) Mars B) Jupiter C) Neptune D) Uranus
14. Which two gases make up most of the sun?
A) oxygen and helium B) hydrogen and oxygen C) helium and hydrogen D) oxygen and carbon dioxide
15. Why is Mars called the Red Planet?
A) all inner planets are red B) It looks red from Earth C) Mars is closest to the sun
16. What is one reason the seasons change?
A) Earth is tilted on its axis B) The sun moves around the Earth C) The temperature of the sun changes
Critical Thinking
17. Every four years, the year has 366 days instead of the normal 365. What is this called? Why does this happen?