Track 18

Unit 7

Astronomy

Mission to Mars

Take the unit test

Listen to each question, circle the letter of the correct answer

1. Why do we need to colonize other planets?

2. What three main obstacles of a mission to Mars do the speaker cover?

3. Why is a capsule preferable to the space shuttle for a trip to Mars?

4. What is the main advantage of a plasma propulsion rocket?

5. Why would a Mars mission probably take longer than the Apollo missions did?

6. The speaker mentions two uses for the oxygen and hydrogen that would come from water detected on Mars. What are they? Choose two answers.

7. What problem does having water and air and sunlight solve?

8. What does the speaker feel might be the most difficult problem to overcome for a Mars mission?

9. The speaker says there are lots of ifs and buts involved in getting to Mars. What does she mean?

10. What is the main idea of the lecture?