electromagnatic wave gr 7

Which of the following are not a part of the Electromagnetic Spectrum?

• Gamma Rays

• Radio waves

• Magnetic waves

• x-rays

Gamma Rays are

• High energy

• Low energy

• Medium energy

• Not Dangerous

Diagram shows a phenomenon occurs when the spotlight is directed onto a mirror surface. What is the principle of light shown in the situation?

• Light travels in a straight line

• Refraction of light

• Reflection of light

• Light travels in parallel

Which wave has the largest wavelength?

• A
• B
• C
• None (same wavelength)

Which particle is a wave of light?

• proton

• neutron

• electron

• photon

Radio waves and _______ are used in communication

• Microwaves

• Gamma rays

• Visible light

• Ultraviolet

This color in the visible part of the spectrum has the lowest energy. 

• Blue
• Green
• Red
• Violet

This color in the visible part of the spectrum has the highest energy.

• Blue
• Red
• Violet
• Yellow

Utilized in treating cancer, the radiotherapy

• gamma ray

• x-ray

• visible light

• microwave

The wave of energy we can see is ___________

• visible light

• radio waves

• microwaves

• x-rays