Page 147 - Knowledge Organiser Yr7 24-25

1.1 What do waves do? Transfer energy from one place to another.
1. Vibrations and Waves
1.9
What is the amplitude of a wave?
1.2
What type of wave is a water wave?
A transverse wave.
The maximum height of the wave from its resting position.
What is a transverse wave?
A wave where the oscillations (vibrations) are perpendicular (at a 90° angle) to the direction the wave is travelling.
1.10
What is the wavelength of a wave?
The distance from any point on one wave to the same point on the next wave along.
1.3
1.11
What are the two types of waves?
Transverse and longitudinal.
1.4
Draw and label a transverse wave.
1.12
What is a longitudinal wave?
A wave where the oscillations (vibrations) are parallel (in the same direction as) the direction that the wave is travelling.
1.13
Draw and label a longitudinal wave.
1.5
What is the unit for amplitude?
Metres.
1.6
What is the unit for wavelength?
Metres.
1.7
What is the highest point of the wave called?
Peak or crest.
1.14
What is an area of compression?
When the vibrations are close together.
1.8
What is the lowest point of the wave called?
Trough.
1.15
What is an area of rarefaction?
When the vibrations are further apart.
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Knowledge Base: Science 7.13 Sound Year 7