Science Chapter 16 question Flashcards
1
Q
The buildup of charges on an object
A
static electricity
2
Q
Which of these is a conductor? A. copper B. glass C. plastic D. wood
A
A.
3
Q
What causes the ballon to repel each other?
F. Neither balloon has a charge.
G. The red ballon is positive and the blue balloon is negative.
H. The red ballon is positive and the blue balloon is neutral.
J. Both ballons have the same charge.
A
J.
4
Q
What is the path that electric current follows called? A. an insulator B. an electric circuit C. potential energy D. kinetic energy
A
D.
5
Q
Tai walked across a carpet and felt a shock when she touch the doorknob. What cause is this? F. The knob was an electromagnet. G. The door knob was an insulator. H. Tai developed a static charge. J. The carpet was a conductor.
A
H.
6
Q
What device is used to start and stop the flow of electric current in a circuit? A. a battery B. an electromagnet C. a motor D. a switch
A
D.
7
Q
When a microwave oven's timer beeps, to what kind of energy is electricity being changed? A. heat B. light C. motion D. sound
A
D.
8
Q
Which appliance cost the most use for half hour? F. a 1200-watt hair dryer G. a 110-watt TV H. A 1000-watt vacuum cleaner J. a 75-watt
A
H.
