Topic 9: The Electron, Video A: Duality of Nature

Question 1

Wavength:

Answer 1

Length of 1 full wave. Distance between 2 consecutuve troughs or peaks.

Question 2

Amplitude:

Answer 2

Height of the wave as defined from the center to the top of a trough or peak.

Question 3

When waves move through a small slit they will spread out and change. This is called?

Answer 3

Diffraction.

Question 4

When waves move through a double slit they both diffract and interfere with one another. This is called?

Answer 4

Interference.

Question 5

When light hits something it refracts or recoils?

Answer 5

It refracts.

Question 6

When a particle hits something does it recoil or refract?

Answer 6

recoil.

Question 7

Is light a wave or a particle?

Answer 7

Both.

Question 8

Diffraction and interference are charactistics of waves or particles.

Answer 8

Waves.

Question 9

Recoil and mass are characteristics of waves or particles.

Answer 9

Particle.

Question 10

Broglie proposed that matter must have what?

Answer 10

A wavelength.

Question 11

What is the Broglie equation

Answer 11

Lambda = h/mv. h is planck’s constant which equals 6.626x10^-34. m = mass in kg. v is velocity in meters per second.