Waves Basics Quiz

Small water waves are created in a ripple tank by a wooden bar. The wooden bar vibrates up and down hitting the surface of the water.

The figure below shows a cross-section of the ripple tank and water.

• J

• K

• L

Small water waves are created in a ripple tank by a wooden bar. The wooden bar vibrates up and down hitting the surface of the water.

The speed of the wooden bar is changed so that the bar hits the water fewer times each second.

What happens to the frequency of the waves produced?

• Increases

• Does not change

• Decreases

The speed of a wave is calculated using the following equation.

wave speed = frequency × wavelength

The water waves in a ripple tank have a wavelength of 1.2 cm and a frequency of 18.5 Hz.

How does the speed of these water waves compare to the typical speed of a person walking?

The diagram shows four sound waves, J, K, L and M, represented on an oscilloscope screen.

They are all drawn to the same scale..

Which two of the waves have the same amplitude?

• J and K

• K and L

• L and M

• J and L

The diagram shows four sound waves, J, K, L and M, represented on an oscilloscope screen.

They are all drawn to the same scale..

Which of the waves would sound the loudest?

• J

• K

• L

• M

Ultrasound waves can be represented on the screen of a cathode ray oscilloscope (CRO).

The diagrams show three ultrasound waves. Each wave is represented on an identical CRO screen, A, B and C.

How many complete waves are shown on screen B?

• 1

• 2

• 3

• 4

Ultrasound waves can be represented on the screen of a cathode ray oscilloscope (CRO).

The diagrams show three ultrasound waves. Each wave is represented on an identical CRO screen, A, B and C.

How many complete waves are shown on screen B?

• 1

• 2

• 3

• 4

The table gives information about the frequencies in the hearing ranges of six different mammals. Which mammal in the table can hear the highest frequency?

• Bat

• Dolphin

• Tiger

The table gives information about the frequencies in the hearing ranges of six different mammals. Give one example of a frequency which an elephant can hear but which a tiger cannot hear.

Include the unit in your answer.

Diagram 1 shows two waves. Name one wave quantity that is the same for the two waves.