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Section 10.3
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1
Which of the following events are involved in the creation of lightning?
A)A flow of negative ions jumps from the ground.
B)Negative charges on the bottom of the clouds induce positive charges on the ground.
C)Gravity pulls electrons down from the clouds.
D)A flow of positive ions jumps from the clouds.
2
Why do you hear thunder after you have seen a flash of lightning rather than at the same time as the flash?
A)Air currents in the cloud interfere with the light waves.
B)Negative charges in the cloud slow down the sound waves.
C)Sound waves travel faster than light waves.
D)Light waves travel faster than sound waves.
3
What is one of the main uses of an electrostatic precipitator?
A)to accumulate and transfer large electric charges
B)to spread particles on surfaces
C)to remove unwanted particles and liquid droplets from a flow of gas
D)to detect and measure exposure to radiation
4
Why is selenium used on the drums of photocopiers, laser printers, and scanners?
A)It is inexpensive and abundant in nature.
B)It is a non-metal that is a poor conductor of light.
C)It is a metal that is a good conductor of light.
D)It is a non-metal that has varying conductivity levels in different conditions.
5
Which of the following technologies has been used to smash atoms?
A)electrostatic precipitator
B)Van de Graaff generator
C)lightning rods
D)radiation dosimeter





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