ESL Science 6—Unit 2

3. The International __________ is a laboratory for astronauts and scientists that orbits around the earth.
7. Space rocks smaller than dwarf planets that orbit the sun.
9. People use huge machines to ______ resources like iron ore from the earth.
11. The layer of gases that surrounds the earth.
14. A pattern of things that happen in the same order again and again.
15. Something that is round and flat, like a Frisbee.
17. Particles from the sun cause ______ in the atmosphere near the North and South Poles.
19. There are usually no clouds in ____________ because cool, dry air is sinking down toward the ground.
21. A tool for looking at things that are very far away.
22. When you ______ a lemon, juice comes out.

1. Machines orbiting the earth that help people communicate with each other.
2. Typhoons can form in ____________ because warm air is rising up into the atmosphere.
4. An object with so much mass and gravity that it pulls light into itself.
5. All the things that are in outer space.
6. A long, thin area with a lot of one kind of matter in it.
8. The part of the middle atmosphere that absorbs ultraviolet energy from the sun.
10. Clouds of gas and dust in outer space.
12. A space rock that falls through the earth’s atmosphere.
13. Smaller prey animals must be fast to ______ from larger predators.
14. A ball of ice and rock that orbits around the sun.
15. When something might hurt you, you are in ______.
16. Very small particles of dirt, sand, or other kinds of matter.
18. Many crabs move ______, from right to left or left to right.
20. Anything orbiting the earth, like old satellites or even objects astronauts have lost, that isn’t doing a job.