Earth, Moon, and sun

Front

What causes Earth to have seasons?

Back

Earth has seasons because its axis is tilted as it moves around the sun.

Front

Who discovered that the Earth's orbit around the sun is an ellipse?

Back

Johannes Kepler.

Front

What is a grouping of stars imagined to represent a figure called?

Back

A constellation.

Front

Who formulated the three laws of motion?

Back

Isaac Newton.

Front

What two factors keep Earth and the moon in their orbits?

Back

Gravity and inertia.

Front

What is the term for the path that an object takes as it moves around another object in space?

Back

Orbit.

Front

What is the primary reason for the phases of the Moon?

Back

The phases of the Moon are caused by the relative positions of the Earth, Moon, and Sun.

Front

What is the effect of the Earth's rotation on its axis?

Back

The Earth's rotation on its axis causes day and night.

Front

What is the gravitational force between two objects dependent on?

Back

The gravitational force is dependent on the masses of the objects and the distance between them.

Front

What is the term for the time it takes for the Earth to complete one full rotation on its axis?

Back

A day.