Question 1

How do we use a sundial to tell the time of day?

Accepted Answer

A sundial has a special pointer that casts a shadow on a round plate. As the sun moves across the sky during the day, the shadow moves to different numbers. This shadow shows us what time it is.

Question 2

Why does an hourglass use sand to measure a period of time?

Accepted Answer

An hourglass has two glass bulbs connected by a very narrow neck in the middle. Fine sand flows slowly from the top bulb to the bottom bulb. It takes a exact amount of time for all the sand to run down, which helps us measure time.

Question 3

What makes a cuckoo clock different from a normal wall clock at home?

Accepted Answer

A cuckoo clock is shaped like a small wooden house with a tiny door on top. Every hour, a little toy bird pops out of the door. The bird sings a cuckoo song to tell us that a new hour has started. These clocks are beautiful additions to a child's Bedroom or family Living Room.

Question 4

How can a smartwatch help us in our daily activities and routines?

Accepted Answer

A smartwatch is a digital wrist watch that connects to your parents' mobile phone. It shows the electronic time clearly. It also counts your steps when you run and measures your heart rate to help you stay active and healthy.

Question 5

What is the job of the swinging pendulum in a pendulum clock?

Accepted Answer

The pendulum is a heavy brass rod that swings side to side underneath the clock. Each swing of the pendulum takes exactly one second. This regular movement helps the internal gears turn correctly so that the clock shows the exact time.

Question 6

Why do we use a stopwatch during sports and running races in school?

Accepted Answer

A stopwatch is a special hand timer used to measure very short periods of time. It can start and stop the moment you press a button on top. This helps teachers and runners record the exact seconds it takes to complete a race.

Question 7

How did a candle clock help people tell time during the night?

Accepted Answer

A candle clock is a wax candle marked with horizontal lines and numbers along its body. As the flame burns the candle down, the wax melts slowly. People looked at the remaining mark on the candle to see how many hours had passed.

Question 8

Where did people keep a pocket watch before wristwatches became popular?

Accepted Answer

A pocket watch is a classic round watch that is attached to a thin gold chain. People did not wear it on their wrist. Instead, they kept it inside their coat or trousers pocket, and pulled it out to check the time.

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