Electromagnetic Waves

How are electromagnetic waves produced?

• any disturbance

• Currents

• Vibrating Charge

• Voltage source

What is the speed of the electromagnetic wave in a vacuum?

• Zero

• Always the same as the speed of light

• Changing depending on the value of its wavelength

• Changing, depending on the value of its frequency

Which type of electromagnetic wave has the shortest wavelength?

• Gamma Ray

• X-ray

• microwave

• radio waves

Which of the following correctly list the electromagnetic waves in order from the longest to the shortest wavelength?

• Gamma Ray, UV,IR, microwave

• Microwave, UV, Visible light, gamma ray

• Radio wave, IR, Gamma ray, UV

• Radio wave, IR, Visible light, X-ray

What happens to the frequency of the electromagnetic wave if its wavelength increases?

• It decreases.

• It increases as well.

• It remains the same.

• It will not increase nor decrease.

What is an example of a radio wave?

• Vision

• Television

• Heat lamp

• Sunlight

X-ray photographs show softer tissues...

• as dark, highly exposed areas.

• as bright white areas.

• as invisible.

• the same as dense bones.

Cellular phones utilize...

• microwaves

• radar waves

• very high frequency waves

• very low frequency waves

Which one is a type of ionizing radiation?

• radio waves

• microwaves

• gamma rays

• infrared

Which type of wave can cause your skin to age prematurely?

• Ultraviolet waves

• radio waves

• X-rays