Properties, uses and hazards of electromagnetic waves - OCR Gateway

1

Which statement concerning electromagnetic waves is true?

2

What happens to the frequency and wavelength of electromagnetic waves as the wave energy increases from radio to gamma?

3

Which of these pairs of electromagnetic waves are used to cook food?

4

Which of these statements is true regarding visible light?

5

Which of these statements about ultraviolet radiation is NOT true?

6

Which of the following are most harmful to body tissue?

7

Which part of the atmosphere can radio waves bounce off to travel further around the Earth?

8

Which of these statements about Infrared is not true?

9

At what speed do electromagnetic waves travel through a vacuum?

10

Which electromagnetic wave has the longest wavelength and the lowest frequency?