Spaceship Earth- Mystery 1 & 2

Front

From Sunday evening to Friday evening, how many complete spins does the Earth make?

Back

5

Front

If the Earth were to spin TWICE (2) as fast as it does now, how many hours would be in one day (one complete spin)?

Back

12

Front

If the Earth were to spin HALF as fast as it does now, how many hours would be in one day (one complete spin)?

Back

48

Front

From what direction does the sun rise?

Back

East

Front

From what direction does the sun set?

Back

West

Front

In ancient times, why would a cloudy day make it hard to know what time it was?

Back

The sun was needed in order to create a shadow clock or sundial.

Front

Would a shadow clock still work if the Earth stopped spinning?

Back

No, since the shadow created by the sun would not change positions.

Front

At what time of day is your shadow the shortest?

Back

Noon

Front

Why did the Ancient Egyptians use 12 segments to divide the day?

Back

They used a base 12 model for counting based on the segments of a human's hand.

Front

What is NOT needed for a shadow clock to work?

Back

The sun to rotate