Page 56 - Science Tour 2
P. 56
discover
The Earth’s main source of light is the
Sun. The Sun is a natural source of
light. Stars are natural sources of light
too.
The lamp is an artificial source of light.
Artificial is anything that is man-made.
Light moves in straight lines.
Smooth and shiny surfaces like
mirrors reflect light.
Reflection is the bouncing back of light
when it hits an object.
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