Skip to content

Waves test with answers for grade 7 science (free PDF download)

  • by

Quick answer: A wave is a repeating disturbance that carries energy from place to place without moving matter along with it. This grade 7 science test on waves has 8 questions worth 20 marks, to do in 45 minutes: wave terms, types of wave and counting at the jetty. The mark scheme is on a separate page; free printable PDF.

Waves test with answers for grade 7 science (free PDF download)

Also, this test checks waves, frequency, wavelength and speed. Also, use a calculator and show every step for the calculations. Then, write units with your answers, and give explanations in full sentences. Marks are shown beside each part.

Level: Grade 7 science (Year 8 · Class 7) · Curriculum: MS-PS4-1

Time: 45 minutes · 8 questions · Total: 20 marks · Calculator allowed

Question 1 Wave terms (3 marks)

  1. State what is meant by the wavelength of a wave. (1 mark)
  2. In addition, name the unit of frequency. (1 mark)
  3. State the wave property that is linked to the energy carried. (1 mark)

Question 2 Types of wave (2 marks)

  1. In addition, name the type of wave made by pushing and pulling the end of a spring along its length. (1 mark)
  2. Afterwards, name the type of wave made by flicking a rope up and down. (1 mark)

Question 3 Counting at the jetty (3 marks)

Chiamaka in Lagos counts 36 crests passing a jetty post in 12 s.
  1. Calculate the frequency. (2 marks)
  2. Moreover, calculate the period, to 2 decimal places. (1 mark)

Question 4 Ripple tank (3 marks)

In a ripple tank the frequency is 6.0 Hz and the wavelength is 0.25 m.
  1. Also, calculate the wave speed. (2 marks)
  2. Then, calculate the time for a ripple to cross a tank 0.90 m wide. (1 mark)

Question 5 Floating cork (2 marks)

A cork floats on a pond. Ripples pass it and it bobs up and down but stays in the same area. Then, explain why.

Question 6 Reading two waves (3 marks)

The figure shows waves A (solid) and B (dashed) on the same grid.

Two waves A and B drawn on the same centimetre grid: wave A rises to 2 centimetres with 6 centimetres between crests, wave B is a dashed line rising to 1 centimetre with 3 centimetres between crests-2-1012036912ABdistance along the wave (cm)y (cm)
Waves A and B on a centimetre grid.
  1. In addition, state the amplitude of wave A. (1 mark)
  2. Moreover, state the wavelength of wave B. (1 mark)
  3. Afterwards, both waves travel at the same speed. State which has the higher frequency. (1 mark)

Question 7 Two drum beats (2 marks)

A drummer hits a drum softly and then hard. Moreover, describe how the wave from the hard hit differs and explain why it sounds louder.

Question 8 Sound wavelength (2 marks)

A note of frequency 170 Hz travels through air at 340 m/s. Calculate its wavelength.

See the waves test answers and mark scheme

Physics and chemistry textbooks to download in PDF, from grade 6 to AP Physics and AP Chemistry

Follow us