QUiz Q's answer part2 Flashcards Preview

Physical Science 105 Sem 1 > QUiz Q's answer part2 > Flashcards

Flashcards in QUiz Q's answer part2 Deck (27):
1

If no net force is acting on a moving object

its velocity will stay the same

2

A coulomb is a unit of electrical

charge

3

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

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

4

An ampere (amp) is a unit of electrical

current

5

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

electrons

6

The particles that move in an electrical current are

electrons

7

Anything that hinders current flow is called a

resistor

8

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

increase

9

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

increase

10

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

an electric field

11

The unit used for measuring resistance is the

ohm

12

Which of the following will have the lowest resistance?

metal

13

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

negative ion

14

Electric field lines are drawn

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

15

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

series

16

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

FALSE

17

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

transverse

18

Sound waves moving through air are what type of wave?

longitudinal

19

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

period

20

Sound waves travel faster in

warm air

21

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

FALSE

22

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

frequency

23

Frequency is the time required for one complete cycle.

FALSE

24

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

longitudinal

25

Longitudinal waves with a frequency above 20,000 Hz are

ultrasonic

26

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

destructive interference occurs.

27

What is the range of normal human hearing?

20 to 20,000 Hz