🌊 Part 1: Wave Properties

1. Which of the following best describes a wave?

A disturbance that transfers energy through matter or space

A solid object that moves through water

A type of particle that carries sound

A form of electricity

2. Sound waves travel fastest through:

Air

Water

Steel

A vacuum

3. The speed of light in air is approximately:

340 metres per second

300,000 kilometres per second

300,000,000 metres per second

1,000 metres per second

4. Which properties affect the pitch of a sound wave? (Select all that apply)

Frequency

Amplitude

Wavelength

Temperature

🔍 Part 2: Light and Sound Applications

5. Explain why we see lightning before we hear thunder, even though they occur at the same time.

6. A sound wave has a frequency of 440 Hz. This means:

It completes 440 vibrations per second

It travels 440 metres per second

It has an amplitude of 440 units

It lasts for 440 seconds

7. Complete the following sentences about light waves:

a) White light can be separated into different colours using a ____________.

b) When light bounces off a surface, this is called ____________.

c) When light bends as it passes from one material to another, this is called ____________.

8. Draw a simple diagram showing how sound waves travel from a guitar string to your ear. Label the key parts.

🧪 Part 3: Real-World Connections

9. Explain how ultrasound technology is used in medicine and why it's useful.

10. A student stands 170 metres away from a cliff and shouts. If the speed of sound in air is 340 m/s, how long will it take to hear the echo?

11. Give two examples of how understanding light waves helps us in everyday life:

Waves: Sound and Light

Waves: Sound and Light

🌊 Part 1: Wave Properties

🔍 Part 2: Light and Sound Applications

🧪 Part 3: Real-World Connections

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