| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
| W |
Sound is produced by the back and forth vibrations of objects such as loudspeaker diaphragm. |
|
Signal generator and speaker with polystyrene balls on top. |
|
|
| T |
Sound waves are longitudinal as the motion of the particles is along the direction the wave is travelling. |
|
What type of wave is a sound wave? Hawaiian-Mexican wave |
|
|
| W |
Sound needs a medium of particles to travel, as the energy in sound waves is passed on by the collision of particles. |
|
Why does sound need a medium to travel? Airzooka to extinguish candle
Bell in Bell jar with vacuum pump. |
|
|
| T |
Sound travels fastest in solids and slowest in gasses. |
|
In which of state of matter (solid, liquid, gas) does sound sound travel fastest? Thought exp:
Long plastic tube filled with water hit at one end.
Three separate sounds |
|
|
| W |
Sound travels fastest in solids as the particles are closest together and so the collisions are passed on faster.
Sound travels slowest in gasses as the particles are farthest apart and so the collisions are passed on slower. |
|
Why does the sound travel faster? |
|
|
| W |
When air particles vibrating with sound energy collide with a microphone diaphragm or an ear drum, their energy is passed on. |
|
Build diagram from loudspeaker to ear, with air particles in between. |
|
|
| D |
The sound energy is absorbed by the diaphragm and ear drum. |
|
What happens when sound waves collide with an object such as an ear drum? |
|
|
|
The microphone and the inner ear transform the sound energy into electrical signals. |
|
|
|
|
| H |
SET HOMEWORK:
Revise keyword meaning and concepts for POO. |
|
|
|
|