Unit 3 Lesson 9 Conductors and Insulators Quiz:

When the air under the envelope is heated, the balloon lifts. Which of the following statements is true?
A: hot air balloons use radiation to rise
B: hot air balloons use conduction to rise
C: hot air balloons use convection to rise
D: hot air balloons use air resistance to rise

4 answers

C
B
C
B&C
D
D
C
B
C
C
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