Elecctromagnetism

Can electromagnetic waves travel by through matter?

• No, only by empty spaces

• Yes, only through matter

• Yes, through matter but also by empty space

Energy carried by an electromagnetic wave is called:

• Radio waves

• Radiant energy

• Electromagnetic energy

• Light energy

How are electromagnetic waves form?

• When the magnetic force is accelerated by an electric charge

• When electric charge accelerates by a magnetic force

• When voltage increases or decreases because of a magnet

• When electric charge increases by a magnetic force

What is the most important source of electromagnetic waves?

• Earth's magnetic field

• Earth's core

• The Ocean

• The Sun

From the following examples, select the one is caused by electromagnetic waves:

• Photosynthensis

• Sun burn in your skin

• Evaporation

• Rain

High-energy electromagnetic wave with short wavelenght and high frequency. They are used in cancer treatments.

• Ultraviolet wave

• X-ray

• Infrared wave

• Gamma ray

Electromagnetic wave that has a longer wavelenght than light. Bluetooth works using this type of waves.

• Microwave

• Radio wave

• Infrared wave

• Ultraviolet wave

The wavelenght and frequency of this type of waves are in the middle of the electromagnetic spectrum:

• Infrared waves

• Light waves

• X-Rays

• Microwaves

Waves with higher frequency than light, they can pass thorugh skin and muscle but the calcium in bone can stop them.

• Infrared waves

• Gamma-ray

• Radio wave

• X-Ray

Which type of waves has lower energy: Radio or microwaves?

• Radio

• Micro