Unit 4 Test: Electromagnetic Induction

Question 1

What is one key accomplishment of Marie and/or Pierre Curie?

Accepted Answer

Marie Currie won the Nobel in Chemistry.

Question 2

Marie and Pierre Curie discovered burns handling a radioactive substance. this led to?

Accepted Answer

the discovery of radiation therapy.

Question 3

Which type of wave can be seen by the human eye?

Accepted Answer

Light wave

Question 4

What property of light is demonstrated when an image of an object is seen on a mirror?

Accepted Answer

regular reflection

Question 5

The speed of sound depends on

Accepted Answer

the properties of the medium it travels through

Question 6

Soundproof rooms take advantage of which property of waves?

Accepted Answer

absorption

Question 7

An electromagnetic wave is made of vibrating

Accepted Answer

electric and magnetic fields.

Question 8

Which of the following correctly describes a gamma ray?

Accepted Answer

short wavelength and high frequency

Question 9

Which of the following is true about all electromagnetic waves in a vacuum?

Accepted Answer

They all travel at the same speed.

Question 10

How does radioactivity make we understand how Earth can be old and still have a hot interior?

Accepted Answer

R. A. elements near the core release heat as nuclei decay.

Question 11

The difference between speed of sound in air at 0° C & that of sound in air at 22° C is that

Accepted Answer

cooler air molecules move slowly and respond less readily.

Question 12

What does object A do when it acts as a transmitter?

Accepted Answer

sends radio signals

Question 13

What did Henri Becquerel thought about fluorescent minerals. He thought...

Accepted Answer

fluorescent minerals need direct sunlight to produce X-rays.

Question 14

In a light wave, the property wavelength determines which characteristic of visible light?

Accepted Answer

color

Question 15

What property of a sound wave changes as the fire truck goes by?

Accepted Answer

frequency

Question 16

What is the principle role of a tower within a cellular system?

Accepted Answer

to transmit signals

Question 17

When light waves cannot be refracted or reflected, it's what?

Accepted Answer

opaque

Question 18

A light ray is entering the water from the air. How should the light ray respond to the medium?

Accepted Answer

It will slow down and bend downward.

Question 19

FM signals travel as changes in

Accepted Answer

the frequency of the wave.

Question 20

What type of wave has rarefaction and compression

Accepted Answer

longitudinal wave

Question 21

The storm waves 7 meters high and about 30 meters apart.” What properties of waves are these?

Accepted Answer

amplitude and wavelength

Question 22

energy of a sound wave is transferred to a medium and causes it to vibrate the sound wave is

Accepted Answer

absorbed.

Question 23

One use of the sonar

Accepted Answer

finding sunken ships

Question 24

Sonar is used to inspect pipelines and bridge foundations. The fact is that

Accepted Answer

sound waves can reflect.

Question 25

Which of the following shows the best conditions for a sound wave to travel?

Accepted Answer

Solid particles

Unit 4 Test: Electromagnetic Induction

Questions 25

Unit 4 Test: Electromagnetic Induction

Questions 25