PDF chapter test TRY NOW
The North-South line at your place:
Let us learn to draw the north-south line with the help of the shadow of a stick.
- Fix a straight stick vertically in the ground where the Sun can be seen for most of the day.
- Call the foot of the stick as point O.
- Sometime in the morning, mark the tip of the shadow of the stick.
- Say this point is A.
- With OA as radius draw a circle on the ground.
- Wait till the shadow becomes shorter and then starts increasing in size.
- When the shadow again touches the circle, mark it as point B.
- Draw the bisector of the angle AOB.
- This is your North-South line.
- To decide which side of this line shows North, use a magnetic compass.
Important!
This is a experiment-based exercise. Write the answer in a sheet and compare it with the solution given below.
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