Thames & Kosmos Kids First: Stepping into Science (Version 2) handleiding

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Thames & Kosmos

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Handleiding

The sun dial

YOU WILL NEED

Continue to experiment! With the

help of a large rod or stick and a

smooth surface in the garden or

sandbox, try to make a large sun

dial. For each half and full hour,

draw a line in the ground where

the shadow of the rod falls.

WHAT’S HAPPENING

You have made a sundial and set the

time. From now on you can read the

time on your sundial. Because Earth

turns around its own axis, it appears

to us as if the sun turns around Earth.

The shadow cast by the obelisk will

therefore wander across the sundial.

It is the hand of the sundial. But the

sundial only works in nice weather

and only from morning until night.

Also don’t forget that in the spring

and summer we have daylight

saving time. In the summer when

your watch shows 12, the time

according to the position of the sun

is only 11 o’clock.



EXPERIMENT 10

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