Wave behaviour and electromagnetic waves

Question 1

What are the 3 things that can happen when a wave meets a boundary?

Answer 1

1. Absorbed-the wave transfers energy to the material’s energy stores
2. Transmitted-the wave carries on travelling through the new material
3. Reflected-When the incoming wave is sent back away from the second material

Question 2

What kind of waves are EM waves?

Answer 2

transverse

Question 3

How does a camp fire transfer energy to its surroundings?

Answer 3

It emits infrared radiation which are absorbed and energy is transferred to an object’s thermal energy store.

Question 4

How do radio waves transfer energy?

Answer 4

They transfer energy to the kinetic energy stores of electrons in radio receivers, which generates an electric current

Question 5

What are electromagnetic waves?

Answer 5

Waves with vibrations of electric and magnetic fields so they can travel through a vacuum.

Question 6

What is the order for the EM spectrum?

Answer 6

Question 7

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

Answer 7

Radio waves

Question 8

Which EM wave has the shortest wavelength and the highest frequency?

Answer 8

Gamma rays

Question 9

What EM waves can we see?

Answer 9

Visible light