Light and Shadow
ICSE · Class 5 · Science
Flashcards for Light and Shadow — ICSE Class 5 Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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What is light?
Answer
Light is a form of energy that helps us see things around us. It comes from sources like the Sun, bulbs, and candles.
Name two natural sources of light.
Answer
Sun and fireflies. The Sun is the main natural source of light. Fireflies produce light at night through a chemical process.
Name two artificial sources of light.
Answer
Electric bulb and candle. These are man-made sources used when natural light is not available.
How do we see objects?
Answer
We see objects when light from a source falls on them and bounces back into our eyes. This bouncing back of light is called reflection.
Why can we see a book under a lamp?
Answer
The light from the lamp falls on the book and reflects into our eyes. This reflection allows us to see the book clearly.
What are transparent objects? Give two examples.
Answer
Transparent objects allow all light to pass through them. We can see clearly through them. Examples: glass, clear water.
What are translucent objects? Give two examples.
Answer
Translucent objects allow some light to pass through them. We can see through them but not clearly. Examples: tracing paper, frosted glass.
What are opaque objects? Give two examples.
Answer
Opaque objects do not allow any light to pass through them. We cannot see through them. Examples: wood, metal.
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