PrimaryPhysicsLight and sound10–15 min
Echo and Shadow
Decide where a bell can be heard, move a torch to size a shadow, and sort materials by how much light they let through.
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0 points
The experiment opens when it comes into view.
Theory and model assumptions
Decide where a bell can be heard, move a torch to size a shadow, and sort materials by how much light they let through.
Teacher guidance
MOE Primary Science: Energy (light and shadows; sound needs a medium)
Expected time: 10–15 minutes.