The Shape of the Earth

The video discusses historical beliefs that the Earth was flat and how sailors feared falling off its edge. It contrasts this with the modern understanding that Earth is round, supported by photographs from space. However, Earth is not a perfect sphere; it bulges at the equator and flattens at the poles.

What was a common belief about the Earth's shape in the past?

• The Earth was a cylinder.

• The Earth was a cube.

• The Earth was flat.

• The Earth was a pyramid.

Why did sailors fear sailing too far out to sea?

• They worried about getting lost.

• They believed they would fall off the edge of the world.

• They feared encountering sea monsters.

• They thought they would run out of food.

What evidence do we have that the Earth is round?

• Mathematical calculations.

• Stories from sailors.

• Photographs taken from space.

• Drawings from ancient maps.

How is the Earth's shape different from a perfect sphere?

• It bulges at the equator and flattens at the poles.

• It is a cube.

• It is a pyramid.

• It is a perfect sphere.

Which of the following best describes the Earth's shape?

• A perfect sphere like a basketball.

• A flat disc.

• A cube with rounded edges.

• A slightly bulging sphere at the equator.