electromagnetic radiation

What is electromagnetic radiation?

Transmission of energy that travels through space in the form of waves

What is electromagnetic spectrum

Visible light energy and all invisible forms of radiation wave

What is energy?

Ability to do work

How many types of electromagnetic radiation are there?

There are seven types of electromagnetic radiation

What are the types of electromagnetic radiation?

• Radio wave

• Microwave

• Infrared

• Visible light

• Ultraviolet

• X-ray

• Gamma-ray

What is radio wave?

Contains longest wavelength in the spectrum

What are the examples of radio wave?

AM/FM radio, radar communication

What is microwave?

A type of radio wave that has the shortest wavelength

What are examples of microwave?

Food microwave, telecommunication

What is infrared radiation?

Type of radiation that has longer wavelength than visible light. Infrared means below red

What is a example of infrared radiation?

Heat from the sun

What is visible light?

Light you can see

What are the colours of visible light?

Red( longest)

Orange

Yellow

Green

Blue

Indigo

Violet ( shortest)

What is ultraviolet light?

Very energetic radiation that has a shorter wavelength than light

What is the benefit and harm if UV?

When UV comes in contact with our skin, it enables your body to make vitamin D. But too much of UV can cause skin cancer.

What is x-ray?

Has a shorter wavelength than UV

What is a example of x-ray?

Photograph teeth and bones

What is gamma ray?

Shortest wavelength

What is a example of gamma ray?

Kill cancer cells

What is ionizing radiation?

Enough energy to remove electrons from atoms or break apart chemical bonds

What are the examples of ionizing radiation?

UV, X-ray, Gamma ray

What is non-ionizing radiation?

Not harmful in small doses because one photons doesn’t have enough energy to ionize atoms, etc

What are the examples of non-ionizing radiation?

Visible light, infrared, radio wave and etc