Question
Design a way to record time using only shadows and a stick.
✓
Answer
Place a stick vertically in the ground on a flat surface in sunlight. Mark the tip of the shadow at regular intervals throughout the day. The changing position and length of the shadow indicate the passage of time. This method forms the basic principle of a sundial.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Why did we use metal wire for making the electric circuit? Can we not use some other material for the wires?
Conduct an experiment with chewed rice and iodine to show starch digestion.
What role does villi performs in the small intestine?
Briefly explain, why animals like cow cannot chew their food properly at the time they take it in.
Write the characteristics of a chemical change.
The given diagram is of human excretory system. Label the marked parts of it.
Describe the process of neutralisation with the help of an example.
Write a short note on the characteristics of Beard ape?
Some changes are given here. Write physical changes in the area marked ‘A’ and chemical changes in the area marked ‘B’. Enter the changes which are both physical and chemical in the area marked ‘C
Process of burning a candle; Tearing of paper; Rusting; Curdling of milk; Ripening of fruits; Melting of ice; Folding of clothes; Burning of magnesium and Mixing baking soda with vinegar.
Process of burning a candle; Tearing of paper; Rusting; Curdling of milk; Ripening of fruits; Melting of ice; Folding of clothes; Burning of magnesium and Mixing baking soda with vinegar.
How is a convection current formed in water?