Show model answer and explanation
a lit lamp
A lit lamp emits light.
Class 2 · Bangla Version · General science
Light, sound and electricity awareness
Explore light, sound and electricity awareness with an example and your own answers.
Original Kidemy foundation practice · Read the example, write your answers, then check. This starter is shared across class versions; it is not a complete board-specific lesson or course.
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Learn the idea
Light travels from a source and helps us see objects. Sound can come from vibrations. Use only low-voltage classroom equipment with a guardian or teacher; never test wall sockets.
Worked example
A battery-powered torch has a light source. A plucked rubber band vibrates and makes a sound.
- Read the example and explain which rule or evidence it uses.
- Try each task yourself, then compare the answer and its reason.
Your written practice
Show your working on paper and enter your answer here. If it does not match, compare the model and try again.
Show model answer and explanation
vibration
The band moves rapidly back and forth.
Show model answer and explanation
a small battery
Use supervised low-voltage battery equipment.
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