Waves and EM spectrum.

Question 1

Low frequenchy to high frequency
Long wavelength to short wavelength.

Answer 1

Radio waves
Microwaves
Infrared
Visible light
Ultra Violet
X rays
Gamma Rays

Question 2

Radio waves

Answer 2

Transmitted through the body without being absorbed

Question 3

Infrared + Visible light

Answer 3

Reflected or absorbed by the skin causing heating too. Ir burns if it is too hot.

Question 4

Ultraviolet

Answer 4

Absorbed by skin. Cause damage to cells on skin surface.

Question 5

X rays and Gamma rays.

Answer 5

Cause mutations and damage cells too. Higher frequency transfers more energy causing more damage.

Question 6

If a black object is left in the sun.

Answer 6

It asobrbs more light than emmited so it gets hotter.

Question 7

If a white object is left in the sun.

Answer 7

If will reflect more light so it is harder to get warmer.

Question 8

Transverse waves.

Answer 8

Perpendicular vibrations to the direction the wave travels.
All EM waves.
S-waves
Ripples and waves in water.

Question 9

Longitudinal waves.

Answer 9

Parallel to the direction the wave travels.
They squash up and stretch out. Compressions is high pressure and rarefactions is low pressure.
Sound waves and P-waves.

Question 10

Microwave uses

Answer 10

Used in microwave ovens.

Question 11

Infrared uses

Answer 11

IR is given out by all hot objects. Used in cameras. IR radiation It can be used to transfer files between phones and laptops.

Question 12

Visible light

Answer 12

Used in photography. This is how cameras create photos

Question 13

X rays

Answer 13

View the internal structure of bodies. Used in bags at the airport.

Question 14

Gamma Rays

Answer 14

Used to kill microbes in food keeping it freesher for longer.