Waves

Question 1

Longitudinal Waves Oscillations

Answer 1

Oscillations are parallel to direction of energy transfer

Question 2

Transverse Waves Oscillations

Answer 2

Oscillations are perpendicular to direction of energy transfer

Question 3

Wave Speed Equation

Answer 3

Frequency x Wavelength

Question 4

Measuring Wavelength

Answer 4

Record Waves with Phone
Freeze Image + Place Ruler on image
Measure Distance Total of 10 Wavelengths
Find 1 Wavelength / 10

Question 5

To find frequency

Answer 5

Record timer and No. Of Waves count No. Waves in 10s ÷ 10

Question 6

Electro Magnetic Spectrum

Answer 6

Radio waves - phones
Microwaves - cooking
Infared - cooking
Visible Light - vision
Ultra Violet - tanning (skin cancer)
X Ray’s - medical scans (dangerous)
Gamma Ray’s - Sterilising medical equipment (dangerous)

Question 7

If speed decreases…

Answer 7

Wavelength decreases while frequency stays constant

Question 8

Amplitude definition

Answer 8

Maximum displacement of a point on a wave from its undisturbed position

Question 9

rarefraction

Answer 9

the first part of the light wave to enter the medium slows down

the rest of the wave continues at a higher speed

causing wave to change direction, towards the normal