The Earth completes one of these every 365.25 days?

• rotation

• revolution

This is the reason we experience day and night?

• rotation

• revolution

The motion of one object around another object is a _?_.

• rotation

• revolution

Spinning of the Earth on its axis is called is called a(n) _?_.

• rotation

• revolution

• orbit

• double axis

Rotation of the Earth takes _?_.

• one day

• one year

• one season

The Earth's _?_ is an imaginary line that goes from the North Pole to the South Pole.

• vernal equinox

• axis

• solar eclipse

• solar flare

All objects are attracted to each other by the force of _?_.

• gravity

• inertia

• orbital speed

• terminal velocity

The strength of the force of gravity depends on _?_.

• the masses of the objects and their speeds.

• the masses of the objects and the distance between them.

• the weight of the objects and their speeds.

• the masses of the objects and their weights.

Which planet in our solar system will have the fastest orbital speed?

• Neptune

• Earth

• Saturn

• Mercury

Which law states that every object in the universe attracts every  other object in the universe?

• Newton’s first law of motion
• Newton’s second law of motion
• The law of universal gravitation
• The law of inertia