Practice identifying stars, galaxies, and major ideas about the universe.
Read each problem carefully. Answer in complete sentences and use evidence from what you know about space.
Exploring objects and patterns in space
Earth Science - Grade 6-8
- 1
What is a star, and how is it different from a planet?
- 2
The Sun is classified as a star. Explain why the Sun is important to Earth.
- 3
Describe one way stars can appear different from each other when viewed from Earth.
- 4
What is a galaxy?
- 5
What galaxy contains our solar system?
- 6
Name one type of galaxy and describe its general shape.
- 7
How does gravity help form stars and galaxies?
- 8
A light-year is used in astronomy. What does a light-year measure?
- 9
Why do astronomers often say looking far into space is also looking into the past?
- 10
What is the universe?
- 11
Many scientists say the universe is expanding. What does this mean?
- 12
Explain the difference between the solar system, the Milky Way galaxy, and the universe.