Communication, detection and cooking
Integrated Science · Grade 9 · about 40 minutes
The same physics carries a phone call, finds an aircraft and heats a meal.
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Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 9 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- What a wave is
- Transverse waves
- Longitudinal waves
- Comparing the two kinds
- Amplitude and wavelength
- Frequency and period
- The wave equation
- Using the wave equation
- Phase
- Straight lines and reflection
- Bending and spreading
- Remote sensing
- How remote sensing works
- Waves in medicine
- Communication, detection and cooking
- Waves: the whole sub-strand