Ancient Greek Water Clocks

There are two types of water clocks - ___________ ___________.

Why were water clocks more reliable than sundials?

• They were smaller and could be transported in your pocket.

• They operated day and night.

• Mythical beasts were afraid of them.

• They did not rely on the sun to function.

What year were water clocks first invented?

• 1492

• 325 BC

• 2.5 million years ago

• 1994

Water clocks remained the most accurate and commonly used timepieces for more than ____________ years.

• 20

• 250

• 3000

• 4 million

Before water clocks, they used ___________ to tell the time?

In Athens, water clocks were used to

• stop the Greeks from getting too thirsty

• tell how fast they were doing their times tables on TTRockstars

• keep speeches from running too long

• stop flooding in the city

What does clepsydra mean?

The type of water clock we made today was an ___________.