MAIN IDEA BELLWORK 1

What is the main idea?

Before clocks were made, people kept track of time by other means. In ancient Egypt, people used a water clock. Water dripped slowly from one clay pot into another. People measured time according to how long it took one pot to empty and the other one to fill. Candle clocks were common during the Middle Ages. As such, when a candle burned, marks on its side showed about how much time had passed. A final ancient way to measure time was the sundial, which used the movement of the sun across the sky. The shadows moving across the face of the sundial showed the current time.

• a. As such, when a candle burned, marks on its side showed about how much time had passed.

• b. Before clocks were made, people kept track by other means.

• c. In ancient Egypt, people used a water clock.

• d. All of the above