OUTCOME
By the end of the lesson you will be able to describe and explain interference and be able to apply this to sound waves
Engage
When waves reflect they interact with a barrier they reflect. The nature of the reflection depends on the type of barrier, fixed or open
When waves interact they move through each other and constructive or destructively interfere
LEARNING TASKS
Explain
1. Describe the difference between wave interactions of an open and fixed end.
2. Draw diagrams showing constructive and destructive interference
Explore and Elaborate
Prac: Wave reflections
Prac: Wave interactions
Evaluate
Make sure you complete all questions from the practical activities
Ex 9.5 Q1-4
PDQs 1.7
Next lessons reading: p. 365-367