Water Waves

Question 1

What type of waves are water waves?

Answer 1

Water waves are transverse waves.

Question 2

What is a transparent tray containing water called?

Answer 2

transparent tray containing water is called a ripple tank.

Question 3

What does the ripple tank use to make waves?

Answer 3

The ripple tank uses an electric motor to make waves.

Question 4

What is the purpose of using a ripple tank?

Answer 4

ripple tank is used to study the behavior of water waves.

Question 5

what does the frequency of the ripples depend?

Answer 5

The frequency of the ripples depends on the frequency of the electric motor.

Question 6

What do we see if we look at ripples from above?

Answer 6

If we look at ripples from above, we see the crests and particles in phase (particles moving together).

Question 7

What do we see if we look at ripples from one side?

Answer 7

If we look at ripples from one side, we could see some particles at the crest while others are at the troughs.

Question 8

What happens to waves when they hit a barrier in a ripple tank?

Answer 8

When waves hit a barrier in a ripple tank, they are reflected back.

Question 9

What is the relationship between the angle of incidence and the angle of reflection?

Answer 9

The angle of incidence is equal to the angle of reflection.

Question 10

What is the normal line in the context of wave reflection?

Answer 10

The normal line is an imaginary line drawn at 90 degrees to the barrier, used to measure angles of incidence and reflection.

Question 11

What happens to the amplitude of waves when they hit a barrier?

Answer 11

Some of the wave’s energy is converted into sound and heat, resulting in reflected waves with a smaller amplitude.

Question 12

Do the wavelength, velocity, and frequency of the waves change when they are reflected?

Answer 12

No,they remain the same

Question 13

What happens to the wavelength of waves when they travel in shallow water?

Answer 13

The wavelength becomes shorter when waves travel in shallow water.

Question 14

What changes occur when waves move from deep to shallow water?

Answer 14

When waves move from deep to shallow water, the wavelength decreases, the frequency stays the same, and the speed decreases.

Question 15

What happens when a piece of glass is placed at an angle to the direction of motion of the waves in shallow water?

Answer 15

When waves travel in shallow water at an angle, they bend (refraction occurs), and the direction changes.

Question 16

What remains the same when waves are reflected from a flat surface?

Answer 16

When waves are reflected from a flat surface, the speed decreases, but the direction stays the same.

Question 17

What happens to the amplitude of waves when they hit a barrier?

Answer 17

Some of the wave’s energy is converted into sound and heat, resulting in reflected waves with a smaller amplitude.

Question 18

What happens to straight waves when they pass through a wide gap?

Answer 18

When straight waves pass through a wide gap, the waves come out straight but with bent ends.

Question 19

How do waves behave when they pass through a narrow gap equal to the size of the wavelength?

Answer 19

When straight waves pass through a narrow gap (equal to the size of the wavelength), they come out circular.

Question 20

Why do waves with very small wavelengths need a very small gap for noticeable diffraction?

Answer 20

Waves with very small wavelengths need a very small gap for noticeable diffraction because the size of the gap must be comparable to the wavelength for diffraction to occur.

Question 21

Why do waves with very small wavelengths need a very small gap for noticeable diffraction?

Answer 21

Waves with very small wavelengths need a very small gap for noticeable diffraction because the size of the gap must be comparable to the wavelength for diffraction to occur.

Question 22

Why can you hear people without seeing them?

Answer 22

You can hear people without seeing them because sound waves are diffracted through doorways, as the wavelength of sound is about the same size as doorways.

Question 23

What is the relationship between the size of the gap and the wavelength for diffraction to occur?

Answer 23

Diffraction depends on the size of the gap compared to the wavelength. If the gap is comparable to the wavelength, noticeable diffraction occurs.