P5.2.2 - Uses And Dangers Of Electromagnetic Radiation

Question 1

What waves are used to communicate between electronics?

Answer 1

Microwaves

Question 2

What types of waves do remote controls use to communicate with television?

Answer 2

Pulses of infrared

Question 3

What type of electromagnetic waves are used in DVDs, CDs, and Blu-Ray?

Answer 3

Visible Light

Question 4

What vitamin is produced by ultraviolet radiation?

Answer 4

D

Question 5

What is ultraviolet commonly used for?

Answer 5

Checking for bodily fluids for forensics and identifying forged bank notes

Question 6

Which electromagnetic waves can damage or kill cells?

Answer 6

Ultraviolet, X-Rays and gamma

Question 7

Describe the dangers of electromagnetic waves.

Answer 7

Ultraviolet can damage the DNA on your skin (skin cancer), and can cause cataracts in your eye, which makes your cornea cloudy
X-Rays and Gamma can damage your cells and cause cancer

Question 8

What type of waves transmit television and radio signals?

Answer 8

Radio waves