general

Question 1

slides

Answer 1

2,3,4,5,7,8,9,10,11,12-18, 21,22

Question 2

Definition of a wave:

Answer 2

a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities.

2

Question 3

waves move

Answer 3

energy not matter
3

Question 4

waves are produced by…

Answer 4

oscillations
6

Question 5

frequency-

Answer 5

Frequency (taajuus): How many waves or disturbances happen in a second. Measured in Hertz (Hz)
7

Question 6

wavelength-

Answer 6

Wavelength (aallonpituus): The “length” of one wave, the distance between the “tops” of the wave
7

Question 7

amplitude-

Answer 7

Amplitude (amplitudi): The “height” of the wave. How high is the “tip” from the center?
7

Question 8

speed-

Answer 8

Speed (nopeus): How fast the wave moves. Measured in m/s
7

Question 9

Connection between frequency (hertz) and time period (seconds)

Answer 9

Frequency = 1 : time period

Time period = 1 : frequency

9

Question 10

Speed of a wave

Answer 10

Wave Speed =Frequency · Wavelength

12

Question 11

Speed of the wave depends on the medium

Answer 11

When we increase the frequency of the oscillation, we only decrease the wavelength. The speed stays the same.
However, changing the medium* of the wave can affect the speed
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Question 12

*Medium / Väliaine =

Answer 12

Material through which the wave is moving

Question 13

what is interference

Answer 13

When reflected waves meet, they interact.