How light acts as a wave and particle (part 1)

Question 1

waves that consist of vibrating electric and magnetic fields. Like other waves, electro-magnetic waves transfer energy from one place to another.

Answer 1

electromagnetic waves

Question 2

The transfer of energy by electromagnetic waves is called

Answer 2

electromagnetic radiation

Question 3

The magnet exerts magnetic force over an area all around it.

Answer 3

this area is called a magnetic field

Question 4

Electromagnetic waves may:

Answer 4

• reflect, or bounce back from a surface;
• refract, or bend when entering a new medium;
• diffract, or spread out around obstacles.

Question 5

commonly called light, is the transfer of energy by waves called electromagnetic waves.

Answer 5

Electromagnetic radiation

Question 6

We now call such a packet of energy a:

Answer 6

photon

Question 7

This theory states that electromagnetic energy is released in discrete packets of energy—now called photons—that act like waves.

Answer 7

wave-particle theory of electromagnetic radiation

Question 8

about 300 million meters per second (3.0 x 108m/s)

Answer 8

speed of light

Question 9

the distance between corresponding points of adjacent waves

Answer 9

wavelength

Question 10

the number of waves that pass a fixed point in a given amount of time

Answer 10

wave frequency

Question 11

The speed of a wave is a product of its:

Answer 11

wavelength and frequency

Question 12

Visible light and infrared light are just a small part of the full range of electromagnetic radiation, which is called the:

Answer 12

electromagnetic spectrum.

Question 13

electromagnetic waves with the longest wavelengths

Answer 13

radio waves

Question 14

stands for amplitude modulation

Answer 14

AM

Question 15

sound signals are encoded by changing the am-plitude, or maximum height, of radio waves.

Answer 15

AM broadcasts

Question 16

stands for frequency modulation.

Answer 16

FM

Question 17

Sound signals are encoded by changing the frequency of radio waves

Answer 17

FM broadcasts

Question 18

an electromagnetic wave with a relatively long wavelength and low frequency.

Answer 18

microwave

Question 19

stands for radio detection and ranging

Answer 19

radar

Question 20

Light with the longest wavelengths is called:

Answer 20

infrared light

Question 21

The term infrared meanS:

Answer 21

“below red.

Question 22

The only light that people can see is called:

Answer 22

visible light

Question 23

Light with wavelengths shorter than visible light is called or he range of light waves that have shorter wavelengths and higher frequencies than violet light in the visible range of light.

Answer 23

ultraviolet light

Question 24

the term ultraviolet means:

Answer 24

“above violet.”

Question 25

extremely energetic electromagnetic waves and shortest wavelengths and highest frequencies of all electromagnetic waves

Answer 25

gamma rays

Question 26

includes all the wavelengths of light that the human eye can detect

Answer 26

Visible light

Question 27

Producing light without heat is called:

Answer 27

luminescence