Why The size of shadow varies at day and evening pipe.
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Bring Science Home
Bring Science Home
Change the Size of a Shadow!
A spooky science project from Science Buddies
By Science Buddies, Svenja Lohner on October 25, 2018أعرض هذا باللغة العربية
Change the Size of a Shadow!
What's casting that shadow? Learn how you can change the appearance of a shadow with some simple physics. Credit: George Retseck
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Key concepts
Physics
Optics
Light
Shadow
Introduction
Halloween is almost here, and behind every corner there seems to lurk a spooky shadow! Luckily this is all they really are—just shadows that are part of decorations set up to give you a thrill while trick-or-treating. But where do these shadows come from, and how can some of them be so huge? Do this activity and find out how to generate the largest and scariest shadow of all!
Background
Answer:
It's because of the location of this sun or we can say the earth rotates thus one point on the earth could be nearer farther from the sun as compared to other point.
In simple terms,
When the Sun is high in the sky, the shadows are much shorter. This happens during noon when the sun is overhead, making the shadow shorter than evening time.
In another way we can say,
The most extreme angle possible before the horizon blocks the sun. The further away from the equator, the longer the shadow, because the sun will never reach directly overhead.