Chapter 11 - Electromagnetic Waves

Question 1

consists of a vibrating electric field and a vibrating magnetic field

Answer 1

Electromagnetic Wave

Question 2

Electromagnetic wave carry ________ ________?

Answer 2

Radiant Energy

Question 3

How fast do electromagnetic waves travel?

Answer 3

300,000 km/s

Question 4

Electromagnetic waves travel more _______ in matter

Answer 4

Slowly

Question 5

The speed of an electromagnetic wave depends on…?

Answer 5

The material

Question 6

Electromagnetic waves can behave as particles called…?

Answer 6

Photons

Question 7

Electromagnetic waves with wavelengths longer than 10cm

Answer 7

Radiowave

Question 8

Electromagnetic waves with wavelengths between 0.1 mm and 30 cm.

Answer 8

Microwave

Question 9

Electromagnetic waves with wavelengths between one thousandth of a meter and 700-billionth of a meter.

Answer 9

Infrared Wave

Question 10

The range of electromagnetic waves that you detect with your eyes.

Answer 10

Visible Light

Question 11

Electromagnetic waves with wavelengths from 400-billionths to 10-billionths of a meter

Answer 11

Ultraviolet Wave

Question 12

UV waves can enter _____

Answer 12

Cells

Question 13

Electromagnetic waves from 10-billionth to 10-trillionth of a meter

Answer 13

X-ray

Question 14

X-rays have _____ wavelengths than UV rays

Answer 14

Shorter

Question 15

Electromagnetic waves with wavelengths shorter than 100-trillionth of a meter

Answer 15

Gamma Ray

Question 16

Produced by processes that occur in the nuclei of atoms

Answer 16

Gamma Rays

Question 17

The range of frequencies of electromagnetic waves is called…?

Answer 17

The electromagnetic spectrum

Question 18

______ and _______ have the longest wavelength.

Answer 18

Radiowaves, Microwaves

Question 19

All objects emit __________

Answer 19

Infrared Waves

Question 20

The human eye can detect ________ ______

Answer 20

Visible Light

Question 21

____, ______, and _____ are both helpful and harmful to humans.

Answer 21

Ultraviolet rays, X-rays, and Gamma rays

Question 22

An electromagnetic wave with the specific frequency that a station is assigned

Answer 22

Carrier Wave

Question 23

The process of adding an information signal to a carrier wave.

Answer 23

Modulation

Question 24

Electric signals whose values change smoothly overtime

Answer 24

Analog Signal

Question 25

electric signal for which there are only two possible values (On and Off)

Answer 25

Digital Signal

Question 26

Transmits one radio signal and recieves another radio signal

Answer 26

Transceiver

Question 27

Telephones contain transceivers and convert _______ into _______ and _______ into _______

Answer 27

sounds waves, electic signals, electirc signals, sound waves

Question 28

Microwave towers and satellites are used to ___ ____ ____.

Answer 28

Transmit telephone signals

Question 29

Uses a system on satellites to determine one's exact position.

Answer 29

Global Positioning System (GPS)

Question 30

R.A.D.A.R stands for?

Answer 30

RAdio Detecting And Ranging