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Practice - Macmillan/McGraw-Hill

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© <strong>Macmillan</strong>/<strong>McGraw</strong>-<strong>Hill</strong><br />

Name<br />

launched particles dense inflate<br />

anchored hydrogen scientific companion<br />

A. Choose the word from the list above that best completes each<br />

sentence. Then write the word on the line.<br />

1. The hot-air balloon soared through the air because it was not<br />

, , or held down, to the ground by anything.<br />

2. The balloons soar because the hot-air is light and the air surrounding<br />

it is heavy and .<br />

3. People in hot-air balloons are into the sky.<br />

<strong>Practice</strong><br />

4. The large balloons when they are fi lled with hot air.<br />

5. The small pieces of matter in air move faster as the air heats. Then the<br />

spread out, and the balloon rises.<br />

6. is a gas that is lighter than air, so it also can be<br />

used in hot-air balloons.<br />

7. Some people ride in hot-air balloons to do experiments.<br />

8. You and a might enjoy sharing a hot-air balloon ride.<br />

B. Label the statements True or False.<br />

9. The science club launched the balloon, and it dug deep into the earth.<br />

10. You can infl ate a balloon with hydrogen or hot air.<br />

11. The balloon will not move when it is anchored to the ground.<br />

12. To conduct scientifi c experiments you must bring a companion.<br />

Vocabulary<br />

Up in the Air • Grade 5/Unit 6<br />

207

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