Our World 5: Unit 4 (Workbook)

Exercise 1 (page 42).

1. People ...whether there is life beyond Earth.

6. Mars travels in a(n) ... around the sun.

7. information = …

10. Earth is the ... third from the sun.

11. The is made of space and all the stars.

12. Earth’s is like a blanket that protects us.

2. If … exist, they live in other places beyond Earth.

3. A(n) … is a trip from one place to another.

4. The … is made up of a sun and the planets that go around it.

5. We sent rockets into ….