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A '''shadow''' is a dark area caused by an object blocking the [[light]].
===About Shadows===
: A shadow can be caused by an [[Opacity|opaque]] object blocking the light from any light source like the sun[[The Sun]], or a light bulb.
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===Note for Teachers===
In year 7 students frequently answer the following question incorrectly:
Only the sun [[The Sun]] can cause shadows: True or False? It is unclear where this misconception comes form but teachers should take special care to ensure students consider this question thoughtfully.