Sound
Science · Grade 7 · Week 25 · 25 questions
Sound is a vibration that travels through air, water, and solids as waves. Understanding sound explains how we hear, how musical instruments work, and why echoes happen.
What you'll practise
- Explain how sound is produced and travels
- Describe properties of sound waves
- Understand pitch, loudness, and frequency
- Explain echoes, reflection, and absorption of sound
All 25 questions in this Sound quiz
Grade 7 Science — Sound: 25 practice questions with instant scoring and explanations.
- Sound is produced by:
- Sound travels in the form of:
- The speed of sound in air is approximately:
- Frequency of sound is measured in:
- Amplitude of a sound wave determines:
- Pitch of sound is determined by:
- A high-pitched sound has:
- Loudness is measured in:
- Sound cannot travel through:
- Sound travels fastest in:
- The medium for sound propagation is:
- Noise pollution is caused by:
- Infrasound is sound with frequency:
- Ultrasound is sound with frequency:
- Ultrasound is used in:
- Resonance occurs when:
- Echo is produced when:
- Reverberation is different from echo because:
- The human ear can hear frequencies between:
- Sound absorption can be improved by using:
- The Doppler Effect is the change in sound:
- When an ambulance moves towards you, the sound pitch:
- Soundproofing materials are chosen because they:
- Sound waves are:
- The relationship between wavelength, frequency, and speed is:
Question 1 of 250 correct so far