By the end of the lesson, you should be able to:

• Define frequency and amplitude

• Describe how a microphone and loudspeaker work

• Describe how sound transfers energy and how this is linked to generating electricity

Lesson basics

By the end of the lesson, you should be able to:

• Name the different parts of the electromagnetic spectrum

• Describe the link between frequency and energy

• Explain why only some electromagnetic waves cause ionisation, and why this is harmful to living cells

Lesson basics

By the end of the lesson, you should be able to:

• Describe a model of a light wave

• Compare transverse and longitudinal waves

• Describe and explain what happens when waves superpose

Lesson basics