Waves practice exercise 1

A sound wave has a speed of 340 m/s and a frequency of 170 Hz as shown below. Calculate its wavelength.  (2 marks)

A sound wave has a speed of 340 m/s and a frequency of 170 Hz as shown below. Calculate its wavelength.  (2 marks)

A child ties one end of a skipping rope to a tree and swings the other end up and down. Describe how this simple activity shows wave generation and what can be observed. (2 marks)

A child ties one end of a skipping rope to a tree and swings the other end up and down. Describe how this simple activity shows wave generation and what can be observed. (2 marks)

Refer to the image below of an ultrasound scan. How are waves used to help doctors see inside the body? (1 mark)

Refer to the image below of an ultrasound scan. How are waves used to help doctors see inside the body? (1 mark)

Refer to the image below of an ultrasound scan. How are waves used to help doctors see inside the body? (1 mark)

During a science fair at your school, a pupil uses a slinky spring to demonstrate how sound travels as a longitudinal wave. Describe how the slinky is used to show this wave. (2 marks)

During a science fair at your school, a pupil uses a slinky spring to demonstrate how sound travels as a longitudinal wave. Describe how the slinky is used to show this wave. (2 marks)

During a science fair at your school, a pupil uses a slinky spring to demonstrate how sound travels as a longitudinal wave. Describe how the slinky is used to show this wave. (2 marks)

During a science fair at your school, a pupil uses a slinky spring to demonstrate how sound travels as a longitudinal wave. Describe how the slinky is used to show this wave. (2 marks)

During a concert, a rope is tied between two poles and set into vibration. Explain how the observed motion can help identify the wave as transverse.  (1 mark)

During a concert, a rope is tied between two poles and set into vibration. Explain how the observed motion can help identify the wave as transverse.  (1 mark)

During a concert, a rope is tied between two poles and set into vibration. Explain how the observed motion can help identify the wave as transverse.  (1 mark)

During a concert, a rope is tied between two poles and set into vibration. Explain how the observed motion can help identify the wave as transverse.  (1 mark)

The diagram below shows two ducks floating in Lake Naivasha as waves pass beneath them. Describe what happens to the ducks and what this reveals about how waves move in water. (2 marks)

Electricians often describe light waves as transverse. Use your knowledge of transverse waves to justify this description.  (1 mark)

Electricians often describe light waves as transverse. Use your knowledge of transverse waves to justify this description.  (1 mark)

Electricians often describe light waves as transverse. Use your knowledge of transverse waves to justify this description.  (1 mark)

While travelling from Kisii to Nairobi, Pamela noticed that her phone signal kept going off and returning. Use your understanding of wave transmission to explain two possible reasons why this happened. (2 marks)

While travelling from Kisii to Nairobi, Pamela noticed that her phone signal kept going off and returning. Use your understanding of wave transmission to explain two possible reasons why this happened. (2 marks)

A team collecting data over Lake Turkana notes weak signals due to high atmospheric absorption. Suggest how they can correct or minimize this issue. (1 mark)

A team collecting data over Lake Turkana notes weak signals due to high atmospheric absorption. Suggest how they can correct or minimize this issue. (1 mark)

A team collecting data over Lake Turkana notes weak signals due to high atmospheric absorption. Suggest how they can correct or minimize this issue. (1 mark)

To optimize tea yield in Kericho, agronomists use remote sensing to assess soil properties. Which wave interaction provides the MOST reliable information about soil composition?

To optimize tea yield in Kericho, agronomists use remote sensing to assess soil properties. Which wave interaction provides the MOST reliable information about soil composition?  (1 mark)

To optimize tea yield in Kericho, agronomists use remote sensing to assess soil properties. Which wave interaction provides the MOST reliable information about soil composition?  (1 mark)

To optimize tea yield in Kericho, agronomists use remote sensing to assess soil properties. Which wave interaction provides the MOST reliable information about soil composition?  (1 mark)

A farmer in Machakos wants to assess land conditions for planting drought-resistant maize. Which remote sensing principle can help in this decision?

A farmer in Machakos wants to assess land conditions for planting drought-resistant maize. Which remote sensing principle can help in this decision?  (1 mark)

A farmer in Machakos wants to assess land conditions for planting drought-resistant maize. Which remote sensing principle can help in this decision?  (1 mark)

A farmer in Machakos wants to assess land conditions for planting drought-resistant maize. Which remote sensing principle can help in this decision?  (1 mark)

A wave on a rope reaches a maximum height of +3 cm and a minimum of -3 cm from its rest position. What is the amplitude?

A wave on a rope reaches a maximum height of +3 cm and a minimum of -3 cm from its rest position as shown below. What is the amplitude?  (1 mark)

A wave on a rope reaches a maximum height of +3 cm and a minimum of -3 cm from its rest position as shown below. What is the amplitude?  (1 mark)

A wave on a rope reaches a maximum height of +3 cm and a minimum of -3 cm from its rest position as shown below. What is the amplitude?  (1 mark)

A clothesline has wet clothes drying. When a strong wind blows steadily, a repeated wave pattern forms along the line. What is the best explanation for this regular wave motion?

A clothesline has wet clothes drying. When a strong wind blows steadily, a repeated wave pattern forms along the line. What is the best explanation for this regular wave motion?  (1 mark)

A clothesline has wet clothes drying. When a strong wind blows steadily, a repeated wave pattern forms along the line. What is the best explanation for this regular wave motion?  (1 mark)

Mzee Kamau listens to daily news from his radio set every morning. Which type of wave transmits the sound to his radio?

Mzee Kamau listens to daily news from his radio set every morning. Which type of wave transmits the sound to his radio?  (1 mark)

Mzee Kamau listens to daily news from his radio set every morning. Which type of wave transmits the sound to his radio?  (1 mark)

The siren of an ambulance in Nairobi emits a sound wave at 340 m/s. If its wavelength is 0.85 m, what is the frequency?

The siren of an ambulance in Nairobi emits a sound wave at 340 m/s. If its wavelength is 0.85 m, what is the frequency?  (1 mark)

The siren of an ambulance in Nairobi emits a sound wave at 340 m/s. If its wavelength is 0.85 m, what is the frequency?  (1 mark)