Light, shadows and reflection Worksheet-2
True/False:
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Artificial sources of light are candles, electric bulbs, and laser.
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Some insects and deep-sea organisms are considered to be source of natural light.
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Different types of materials pass same amount of light through them.
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Materials that transmit some amount of light are called translucent materials.
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Translucent materials are metals, mud, cement, coal, and wood.
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Only an ideal mirror allows any light pass through it.
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In biology, propagation is a process by which sound or light waves travel through a medium such as air or water.
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A ray is a line with an arrow that shows the direction of propagation of light.
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An opaque object blocks the light falling on it.
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Only when light rays are obstructed by an opaque object that we get a shadow of the object.
Answer Key:
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True
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True
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False
Exp: Different types of materials pass different amount of light through them.
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True
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False
Exp: Opaque materials are metals, mud, cement, coal, and wood.
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False
Exp: An ideal mirror does not let any light pass through it.
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False
Exp: In Physics, propagation is a process by which sound or light waves travel through a medium such as air or water.
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True
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True
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True