QUiz Q's answer part2

Question 1

If no net force is acting on a moving object

Answer 1

its velocity will stay the same

Question 2

A coulomb is a unit of electrical

Answer 2

charge

Question 3

A negative electric charge is (choose all that are correct)

Answer 3

repelled by another negative electric charge And attracted to a positive electric charge.

Question 4

An ampere (amp) is a unit of electrical

Answer 4

current

Question 5

An object acquires an electrostatic charge when _______ are added or removed.

Answer 5

electrons

Question 6

The particles that move in an electrical current are

Answer 6

electrons

Question 7

Anything that hinders current flow is called a

Answer 7

resistor

Question 8

For a fixed resistance, increasing the voltage will ________ the current in a circuit.

Answer 8

increase

Question 9

For a fixed voltage, increasing the current will ________ the power in a circuit.

Answer 9

increase

Question 10

What travels through a conductor at near the speed of light when a current is established?

Answer 10

an electric field

Question 11

The unit used for measuring resistance is the

Answer 11

ohm

Question 12

Which of the following will have the lowest resistance?

Answer 12

metal

Question 13

A neutral atom that gains one or more electrons is called a(n)

Answer 13

negative ion

Question 14

Electric field lines are drawn

Answer 14

in such a way as to show the direction of the field.

Question 15

The same current will flow through two light bulbs that are connected together in

Answer 15

series

Question 16

A magnetic north pole may exist by itself without a corresponding south pole.

Answer 16

FALSE

Question 17

Particles of a material that move up and down perpendicular to the direction the wave is moving are in what type of wave?

Answer 17

transverse

Question 18

Sound waves moving through air are what type of wave?

Answer 18

longitudinal

Question 19

The time required for one cycle (one oscillation) of any repeating event is called the

Answer 19

period

Question 20

Sound waves travel faster in

Answer 20

warm air

Question 21

The larger the amplitude of a wave, the higher its speed.

Answer 21

FALSE

Question 22

You hear a higher pitch when a sound wave has a greater

Answer 22

frequency

Question 23

Frequency is the time required for one complete cycle.

Answer 23

FALSE

Question 24

Particles of a material that move back and forth in the same direction the wave is moving are in what type of wave?

Answer 24

longitudinal

Question 25

Longitudinal waves with a frequency above 20,000 Hz are

Answer 25

ultrasonic

Question 26

When the trough of one wave arrives at the same time and place as the crest of an otherwise identical wave,

Answer 26

destructive interference occurs.

Question 27

What is the range of normal human hearing?

Answer 27

20 to 20,000 Hz