Is the moon a light source? Explain why., No, it reflects light from the sun and does not produce its own., Why can an object behind a cardboard sheet not be seen?, Cardboard is opaque and light travels in a straight line, blocking light., What property of light allows a shadow to form on a screen?, Light travels in a straight line and is blocked by an opaque object., What is the scientific term for objects that give off light?, Objects that give off their own light are called luminous objects., What material property allows a display box to show figurines most clearly?, Transparent, which allows the most amount of light to pass through., Are a firefly and a burning candle both sources of light?, Yes, both objects give off their own light., Does light energy have mass or occupy space?, No, light energy does not have mass and does not occupy space., How does a tree become visible to a person?, It reflects light from the sun into the person's eyes., Why can light from a candle reach the eye through aligned cardboard holes?, Light travels in a straight line through the aligned holes., Why does a mirror give a clearer reflection than a glass window?, A mirror reflects most light, while glass allows most light through.

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