electromagnetic spectrum ppt

Because it allows sunlight to reach Earth from the Sun

Because it makes electromagnetic waves slower than sound waves

Because it means electromagnetic waves need water to travel

Because it prevents electromagnetic waves from being used in communication

As vibrations in electrical and magnetic fields

As sound waves in air

As particles only

As heat through solids

It has properties of both waves and particles

It can be filtered using polarized lenses

It can knock electrons off a substance

It only behaves as a wave

It increases

It decreases

It stays the same

It fluctuates randomly

Microwave oven

People

Soccer field

Radioactive elements

Radio waves

Microwaves

Infrared waves

Gamma rays

To create images of the body's internal structures

To transmit radio signals over long distances

To cook food quickly

To broadcast television signals

They have shorter wavelengths than radio waves.

They have higher frequencies than radio waves.

They are used in microwave ovens.

They have the lowest frequency of all electromagnetic waves.

To transfer energy to the water in food, causing it to heat up

To cook food using visible light

To freeze food quickly

To remove water from food

Radio waves

Infrared rays

Visible light

Microwaves

They have a shorter wavelength than microwaves.

They can be felt as warmth on your skin.

They are visible to the human eye.

Warm objects emit more infrared rays than cool objects.

It bends and separates into different colors

It disappears

It speeds up

It turns into ultraviolet rays

They have shorter wavelength and higher frequency than visible light

They have longer wavelength than visible light

They carry less energy than visible light

They are not part of the electromagnetic spectrum

They have shorter wavelength and higher frequency than UV-rays

They carry less energy than UV-rays

They cannot penetrate matter

They are used to produce vitamin D