Straight lines and reflection
Integrated Science · Grade 9 · about 40 minutes
Waves keep going straight until something stops them, and then they bounce.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 10 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