The Sun’s Energy

• The Sun releases a huge amount of energy into the space around it.

• It’s the same amount of energy as 100 billion tons of TNT exploding every second!

Electromagnetic Radiation• Electromagnetic

radiation is one way of moving energy from one place to another place

• Energy moves from the Sun to the earth in the form of electromagnetic radiation

Radio

Radio Microwave

Radio Microwave Infrared

Radio Microwave Infrared

Visible

Radio Microwave Infrared

Visible

Ultraviolet

Radio Microwave Infrared

Visible

Ultraviolet

X-ray

Radio Microwave Infrared

Visible

Ultraviolet

X-ray

Gamma Ray

Together, they make up…

Radio Microwave Infrared

Visible

Ultraviolet

X-ray

Gamma Ray

Is electromagnetic radiation harmful?

• It depends…• Radio, microwave,

infrared, and visible usually aren’t harmful, but can be if the radiation is very strong

• Ultraviolet, x-rays, and gamma rays are more harmful

We can’t see it

• But the radiation is still there.

• There is Electromagnetic radiation from radio antennas, cell phone towers, the Sun, and other sources in this room.

• You, like this dog, are a source of infrared electromagnetic radiation!