1st Unit Planet Earth. Listening

What was Eratosthenes' discovery on the Earth's surface?

• The Earth in flat

• The Earth is squared

• The Earth is triangular

• The Earth is round

How many degrees of difference in shadow did Eratosthenes observe between Alexandria and Syena?

What was the distance between Alexandria and Syena that Eratosthenes used in his calculations?

• 500 kms

• 1200 kms

• 1000 kms

• 800 kms

What tool did Eratosthenes use to perform his calculations?

• Hammer

• Stick

• Stone

• Compass

What was the circumference of the Earth according to Eratosthenes' calculations?

• 30,000 kms

• 20,000 kms

• 50,000 kms

• 40,000 kms

What did Eratosthenes discover about the distance between Alexandria and Syena?

• He did not know the distance

• The distance was around 500 kms

• The distance was around 800 kms

• The distance was around 1000 kms

What was the main "tool" that Eratosthenes used to measure the distance between Alexandria and Syena?

• A watch

• A telescope

• A car

• A man

What did Eratosthenes discover about the curvature of the Earth?

• He found out nothing

• That the Earth was triangular

• That the Earth was round

• That the Earth was flat

What was the difference in the length of the shadows between Alexandria and Syena?

What was the main characteristic of the sun's rays according to Eratosthenes?

• They were parallels

• There were curve

• They were short

• They were long