Planetary Motion

Planetary Motion

by Alice Richards

Multiple Choice

What is the name of this model?

• Heliocentric Model

• Geocentric Model

• Circle Model

• Aristotle Model

Multiple Choice

Earth's spinning on its axis is called its _____________.

• orbit

• revolution

• rotation

• cycle

Multiple Choice

When a body in space travels around a larger body in space it is said to _____________ around the larger body.

• rotate

• revolve

• axis

Multiple Choice

Planets orbit the Sun in a shape called a(n)

• circle

• ellipse

• focus

• perihelion

Multiple Choice

Where is the planet moving faster

• Position A to B

• Position B to C

• Position H to I

• Position I to J

Multiple Choice

When do planets move the fastest?

• Close to the sun

• Far away from the sun

Multiple Choice

A year on Jupiter is 4,344 days long. This tells you how long it takes

• Jupiter to orbit the sun.

• Jupiter to rotate one time on its axis.

• the sun to orbit Jupiter.

• Earth to orbit Jupiter.

Multiple Choice

What causes Earth’s year to be shorter than Jupiter’s year?

• the gravitational pull of Jupiter’s moons

• the shape of Earth’s orbit around the Sun

• the distance between Earth and the Sun

• the mass and density of Jupiter

Multiple Choice

The law of universal gravitation is credited to whom?

• Einstein

• Galileo

• Darwin

• Newton

Multiple Choice

Two factors effecting the magnitude of the force of gravity between 2 objects are _____ and _______.

• mass and distance

• mass and matter

• distance and weight

• weight and mass

Multiple Choice

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more

• same

• dosen't matter

• less

Multiple Choice

If one of two objects increases its mass, it _________ the gravitational pull between the two objects

• increases

• decreases

• has no effect on

• eliminates

Multiple Choice

the tendency of an object to resist a change in its motion

• acceleration

• inertia

• mass

• frame of reference

Multiple Choice

Because of inertia, a moving object will keep ________.

• at rest

• moving

• in one spot

• inertia 

Multiple Choice

What keeps the planets in orbit around the sun?

• gravity and inertia together

• gravity

• inertia

• neither gravity or inertia

Multiple Choice

What would happen to Earth if there were no inertia?

• Earth would crash into the sun

• Earth would fly out to space

• Earth would collapse

• Earth would orbit the moon

Multiple Choice

What would happen to Earth if there were no gravity?

• Earth would crash into the sun

• Earth would fly out to space

• Earth would collapse

• Earth would orbit the moon

​The End

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