Science Chapter 16 question

Question 1

The buildup of charges on an object

Answer 1

static electricity

Question 2

Which of these is a conductor?
A. copper
B. glass
C. plastic
D. wood

Answer 2

A.

Question 3

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.

Answer 3

J.

Question 4

What is the path that electric current follows called?
A. an insulator
B. an electric circuit
C. potential energy
D. kinetic energy

Answer 4

D.

Question 5

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.

Answer 5

H.

Question 6

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

Answer 6

D.

Question 7

When a microwave oven's timer beeps, to what kind of energy is electricity being changed?
A. heat
B. light
C. motion
D. sound

Answer 7

D.

Question 8

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

Answer 8

H.