Waves - Electromagnetic

Question 1

What type of wave is an electromagnetic wave?

Answer 1

Electromagnetic waves are transverse waves.

Question 2

What way does the vibrations travel in an electromagnetic wave?

Answer 2

Their vibrations or oscillations are changes in electrical and magnetic fields at right angles to the direction of wave travel.

Question 3

What do all electromagnetic waves do?

Answer 3

Transfer energy as radiation from the source of the waves to an absorber
Can travel through a vacuum such as in space
Travel at the same speed through a vacuum or the air
Travel at 300 million metres per second (m/s) through a vacuum.

Question 4

What are the 7 distinct groups on the on the spectrum?

Answer 4

Radio Waves
Microwaves
Infared
Visible Light
Ultra Violet
X Rays
Gamma Rays

Question 5

What type of waves are on the spectrum?

Answer 5

Waves with a very short wavelength, high frequency and high energy and waves with a very long wavelength, low frequency and low energy.

Question 6

What colours in visible light light have the lowest and highest frequency?

Answer 6

Red light has the lowest frequencies of visible light and violet light has the highest frequencies of visible light

Question 7

What is one or more uses for Radio Waves, Microwaves, Infared, Visible Light, Ultra Violet, X Rays and Gamma Rays?

Answer 7

Radio Waves can be used for communication.
Microwaves are used for cooking food.
Infrared light is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect people in the dark.
X rays can be used for X-rays detect bone breaks.
Gamma rays can be used to kill mutated cells.
Visible Light can be used for produce images.