Features of waves

1

Which of these cannot travel through a vacuum?

2

What do we call the height of a wave?

3

What do we measure in hertz in sound waves?

4

What describes the spreading out of a wave after it has passed through a gap?

5

What size gap causes significant diffraction?

6

What are the units of frequency?

7

How do we calculate the frequency of a wave?

8

What is the period of a wave?

9

Which of these is not a type of electromagnetic radiation?

10

What is the wave speed equation?