Light and Electromagnitism

Question 1

Hertz

Answer 1

The unit of one wave per second
Light has a frequency of 300 million Hertz

Question 2

Node

Answer 2

A point on a standing wave that has no displacement from the rest position

Question 3

Antinode

Answer 3

A point of maximum amplitude on a standing wave

Question 4

Wavelength`

Answer 4

Horizontal distance between the crests or between the troughs of two adjacent waves

Question 5

Frequency

Answer 5

How many waves pass a given point per second

Question 6

Electromagnetism

Answer 6

The interaction between electricity and magnetism

Question 7

Speed of Light

Answer 7

300,000 km/s

Question 8

Infrared Light

Answer 8

Invisible light and gives us heat

Question 9

Ultraviolet

Answer 9

Electromagnetic waves of frequencies higher than those of violet light.

Question 10

Microwave

Answer 10

Very short electromagnetic waves

Question 11

Radio Wave

Answer 11

Electromagnetic waves with the longest wavelengths and lowest frequencies

Question 12

Visible Light

Answer 12

Electromagnetic radiation that can be seen with the unaided eye

Question 13

X-Ray

Answer 13

A form of energy that travels in waves

Question 14

Gamma Ray

Answer 14

Electromagnetic waves with the shortest wavelengths and highest frequencies

Question 15

Thomas Young

Answer 15

Showed that light was not made up of tiny particles but actually made of waves of energy. (1773-1829)

Question 16

Olaf Romer

Answer 16

First person to measure the speed of light in 1644-1710

Question 17

William herschel

Answer 17

Discovered infrared radiation (1738 - 1822)

Question 18

Johann Ritter

Answer 18

Discovered ultraviolet light (1776 - 1810)

Question 19

Wilhelm Roentgen

Answer 19

Discovered x-rays in (1845 - 1923)

Question 20

Transparent

Answer 20

Allowing light to pass through

Question 21

Translucent

Answer 21

Allowing some light to pass through but giving an unclear image

Question 22

Opaque

Answer 22

impossible to see through

Question 23

Reflection

Answer 23

The bouncing back of a wave when it hits a surface through which it cannot pass

Question 24

Transmission

Answer 24

The way a microbial organism moves from one host to another

Question 25

Diffraction

Answer 25

Occurs when an object causes a wave to change direction and bend around it

Question 26

Scattering

Answer 26

an interaction of light with matter that causes light to change its energy, direction of motion, or both

Question 27

Camera Obscura

Answer 27

a darkened enclosure in which images of outside objects are projected through a small aperture or lens onto a facing surface

Question 28

Amplitude

Answer 28

For a wave or vibration, the maximum displacement on either side of the equilibrium (midpoint) position.

Question 29

Crest

Answer 29

Highest point of wave

Question 30

Trough

Answer 30

Lowest point of wave

Question 31

Radiation

Answer 31

Energy that is radiated or transmitted in the form of rays or waves or particles.

Question 32

Focal Point

Answer 32

the point at which rays parallel to the optical axis reflect and meet

Question 33

Incandessence

Answer 33

A process that makes light with heat

Question 34

Luminescence

Answer 34

the emission of light by a substance that has not been heated, as in fluorescent and phosphorescence

Question 35

Fluorescence

Answer 35

the property of a mineral in which the mineral glows under ultraviolet light