Generation of waves practice exercise 1

Define a wave as used in science. (1 mark)

Describe what happens when wind blows across tall grass.  (1 mark)

Describe what happens when you pluck a stretched string.  (2 marks)

Describe what happens when you pluck a stretched string.  (2 marks)

Explain how sound waves are formed in a drum.  (2 marks)

List three common natural causes of ocean waves. (3 marks)

State two types of waves and give one example for each.  (2 marks)

The diagram below shows a girl shaking a long scarf attached to a fence post. Explain how the wave is formed and what it tells us about energy movement. (2 marks)  

The diagram below shows a speaker placed near dry maize grains on a cardboard surface. The speaker is playing loud music. Identify the source of the wave and describe the effect observed on the maize grains. (2 marks)

The diagram below shows a speaker placed near dry maize grains on a cardboard surface. The speaker is playing loud music. Identify the source of the wave and describe the effect observed on the maize grains. (2 marks)

The diagram below shows a stone being dropped into a bucket filled with still water. Describe what happens when the stone hits the water. (2 marks)

The diagram below shows a stone being dropped into a bucket filled with still water. Describe what happens when the stone hits the water. (2 marks)

The diagram below shows a stone being dropped into a bucket filled with still water. Describe what happens when the stone hits the water. (2 marks)

Name and describe two types of waves based on whether they need a medium to travel.  (2 marks)

Describe two types of waves based on whether they need a medium to travel.  (2 marks)