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Question 1

What is wavelength?

Answer 1

Distance between the same points on two consecutive waves

Question 2

What is amplitude?

Answer 2

Distance from equilibrium line to the maximum displacement (crest or trough)

Question 3

What is frequency?

Answer 3

The number of waves that pass a single point per second

Question 4

What is period?

Answer 4

The time taken for a whole wave to completely pass a single point

Question 5

What is the formula for wave velocity?

Answer 5

velocity = frequency × wavelength = v = fλ

Question 6

What is the formula for period in terms of frequency?

Answer 6

period = 1/frequency = T = 1/f

Question 7

What happens to velocity when frequency increases?

Answer 7

Velocity increases

Question 8

What happens to wavelength when velocity increases?

Answer 8

Wavelength increases

Question 9

What is the relationship between period and frequency?

Answer 9

Period is inversely proportional to frequency

Question 10

What are transverse waves?

Answer 10

Waves with peaks and troughs; vibrations are at right angles to the direction of travel

Question 11

Give an example of a transverse wave.

Answer 11

Light or any electromagnetic wave

Question 12

What are longitudinal waves?

Answer 12

Waves with compressions and rarefactions; vibrations are in the same direction as the direction of travel

Question 13

Give an example of a longitudinal wave.

Answer 13

Sound waves

Question 14

What happens to waves at the boundary between two different materials?

Answer 14

Waves can be reflected, absorbed, or transmitted

Question 15

What is the angle of incidence?

Answer 15

The angle at which a wave hits a surface, equal to the angle of reflection

Question 16

What occurs during wave reflection?

Answer 16

Waves will reflect off a flat surface; smoother surfaces reflect more strongly

Question 17

What is transmission in the context of waves?

Answer 17

Waves passing through a transparent material

Question 18

What is absorption in wave behavior?

Answer 18

When light frequency matches the energy levels of electrons, leading to absorption

Question 19

What are the limitations of human hearing?

Answer 19

Humans cannot hear below 20Hz or above 20kHz

Question 20

What is ultrasound?

Answer 20

Sound waves with frequencies above 20kHz

Question 21

What is infrasound?

Answer 21

Sound waves with frequencies below 20Hz, also known as seismic waves

Question 22

What are P waves?

Answer 22

Longitudinal waves that can pass through solids and liquids

Question 23

What are S waves?

Answer 23

Transverse waves that only pass through solids

Question 24

What is sonar?

Answer 24

A method using ultrasound to measure depth or locate objects underwater

Question 25

What is the relationship between wavelength and frequency in electromagnetic waves?

Answer 25

As wavelength decreases, frequency increases

Question 26

What does the retina detect?

Answer 26

Visible light, a small part of the entire electromagnetic spectrum

Question 27

What happens to light when it enters a denser medium?

Answer 27

It bends towards the normal

Question 28

What is a black body?

Answer 28

An object that absorbs all radiation it receives and emits all types of radiation

Question 29

What is the effect of increasing temperature on radiation?

Answer 29

It releases more powerful and shorter-wavelength radiation

Question 30

What is the impact of UV light on human skin?

Answer 30

It can cause premature aging and increase the risk of skin cancer

Question 31

What is magnification?

Answer 31

Image height divided by object height

Question 32

What type of image can concave lenses produce?

Answer 32

Only virtual images

Question 33

What type of image can convex lenses produce?

Answer 33

Both virtual or real images

Question 34

What is the difference between specular and diffuse reflection?

Answer 34

Specular reflection occurs on smooth surfaces; diffuse reflection occurs on rough surfaces

Question 35

What color does an opaque object appear based on?

Answer 35

The wavelengths that are reflected

Question 36

What is the significance of Earth's atmosphere regarding temperature?

Answer 36

It absorbs and re-radiates IR radiation from the sun, helping maintain constant temperature