Warm air rises because faster moving molecules tend to move to regions of less
A) density.
B) pressure.
C) both of these
D) none of the above
Correct Answer:
Verified
Q2: Which of these are good conductors?
A)feathers.
B)wood.
C)snow.
D)all the
Q9: Conduction has most to do with electrons
Q11: A water-filled paper cup held in a
Q12: Metals are both good heat and electrical
Q13: A bare roof of a warmly heated
Q15: Your bare feet feel warmer on a
Q16: A good heat conductor is a
A)poor insulator.
B)good
Q18: In practice, a good insulator
A)stops heat flow.
B)slows
Q18: Spun glass is a relatively
A)good conductor.
B)poor conductor.
C)both
Q19: Because of trapped air inside,snow is a
A)poor
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