Waves

Question 1

Give samples of transverse waves.

Answer 1

light, water, strings

Question 2

How do transverse waves move

Answer 2

Vibrations are at 90° to the direction of wave travel

Question 3

Samples of longitudinal waves.

Answer 3

sound, slinky spring

Question 4

How do longitudinal waves move?

Answer 4

Vibrations are along the same direction as wave travel

Question 5

Characteristics of Waves

Answer 5

Waves carry energy from one place to another

Question 6

What is Amplitude?

Answer 6

The distance from the middle to either the trough or peak

Question 7

What is Wavelength?

Answer 7

The distance of one full cycle of a wave

Question 8

What is frequency?

Answer 8

The number of waves that pass a point in 1 second

Question 9

How to find wave speed?

Answer 9

Wave speed=Frequency*Wavelength

V(m/s)=f(hz)*λ(m)

Question 10

How to find period using frequency?

Answer 10

T(s)=1/f(hz)

Question 11

What is trought?

Answer 11

The lowest possition of the wave

Question 12

What is crest?

Answer 12

The highest point of the wave

Question 13

What are the most energetic of electromagnetic radiation?

Answer 13

1. UV
2. Xrays
3. Gamma rays

Question 14

How gamma rays are produced

Answer 14

Naturaly when nucleus of radioactive atoms decay

Question 15

What is photon?

Answer 15

A photon is a packet of electromagnetic radiation

Question 16

What is ionisation?

Answer 16

Ionisation is when electromagnetic radiation knocks electron from atom, the atom is ionised and have possitive charge

Question 17

What happens when it is too much ionisation

Answer 17

It can causw cancerous cells

Question 18

What is photoelectric effect?

Answer 18

It is when some UV, xrays and gamma photons are so energetic that they can behave as a particld and eject electrons from surface of metal