Time Measurement Before Clocks

Before clocks, time was measured using devices like sand clocks, water clocks, and sundials. Sand clocks use sand falling between two bulbs to measure time. Water clocks involve a vessel sinking in water at a consistent rate. Sundials use the shadow of a pole on a marked plate to indicate time. These methods were used globally before pendulum clocks became popular.

Which of the following devices was NOT mentioned as a method of measuring time before clocks?

• Pendulum clock

• Sundial

• Water clock

• Sand clock

What is the main component of a sand clock that helps in measuring time?

• Sand

• Water

• Metal

• Wood

How does a water clock measure time?

• By the movement of a shadow

• By the sinking of a vessel

• By the flow of sand

• By the ticking of a pendulum

What is the purpose of the pole in a sundial?

• To balance the sundial

• To measure the water level

• To cast a shadow on the markings

• To hold the sundial in place

Before pendulum clocks, which device used the sun to tell time?

• Sundial

• Water clock

• Hourglass

• Sand clock