NAME____________________
Science – Solar System and Environment for Life on Earth
1. How many planets orbit around our Sun?
2. Describe how our solar system formed.
3. What force (energy) makes the planets orbit (circle) around the sun?
4. What gases is the sun mainly made up of?
5. true or False? All living things on Earth need the energy of the Sun.
6. Why is Mars red?
7. What is a comet?
8. What are the four things that life on Earth needs?
9. What protects the Earth from too much solar radiation?
10. What percentage (%) of human bodies are made up of water?
11. What four (4) elements make up most of life on earth?
12. Why does Neptune not get enough energy from the Sun to contain life?