Front

When does the Earth cast a round shadow on the surface of the Moon?

Back

During lunar eclipse

Front

Which of these pieces of evidences does not support the Greek's idea of a spherical Earth?

• The North Star (Polaris) cannot be seen in the South Pole.
• The sail disappears last when a ship sails away over the ocean.
• The curvature of the Earth's surface causes the light rays to bend.
• The Earth's shadow cast on the surface of the Moon is round during a lunar eclipse.

Back

The curvature of the Earth's surface causes the light rays to bend.

Front

Where is Polaris located in the night sky when you are standing at the equator?

Back

It’s closer to the horizon

Front

Which law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and direction unless acted upon by an unbalanced force?

Back

Law of Inertia

Front

According to Galileo, what would happen to the height of the ball as it rolls down the inclined plane if the external force is removed?

Back

Original height is equal to the initial height.

Front

What is the subtle difference between Newton’s first law of motion and Galileo’s assertion that force is not necessary to sustain horizontal motion?

Back

All of the above

Front

How did ancient people make use of their observations in the sky?

Back

They used it for telling time, navigation, agriculture, and religious practices

Front

Which astronomical phenomena was used as the basis of creating ancient calendars?

Back

Phases of the Moon

Front

The two types of motion according to Aristotle?

Back

Natural and Violent

Front

Which among the following statements is CORRECT about the law of ellipses?

Back

Planets move in an elliptical orbit with the sun as one of the foci.