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WorksheetsGravity & the Universe
Total questions: 18
Worksheet time: 9mins
Which force keeps the planets from floating off into space?
the Sun’s gravity
Earth’s gravity
the moon’s gravity
What do the red arrows in the picture mean?
The moon would not stay in orbit without the pull of Earth's gravity.
The moon will move away from Earth because of inertia.
The moon moves toward the Sun due to gravity.
When two objects are near each other, how would increasing one object’s mass affect it?
The gravitational force of the object would increase.
The weight of the object would decrease.
The mass of the object would be stronger than gravity.
At which location would an object’s weight be the greatest?
Earth
Moon
Mars
Pluto
Which statement explains how planets move in orbit as supported by Newton’s first law of motion?
Planets in motion will have a constant speed unless acted on by an outside force.
Planets can change the direction of their own orbital path.
Planets can change orbits due to their inertia.
In addition to how much force Earth exerts on the object, which features of an object affect its weight?
mass and location of the object
how much energy the object has
the shape of the object
Which description explains how inertia changes the effects of gravity on objects in the solar system?
prevents planets from pulling into one another
pulls asteroids toward Earth
keeps the Sun stationary
Which statement describes how Earth compares to the moon?
Earth has more inertia than the moon.
The moon rotates at a constant speed while Earth’s speed varies.
Earth and the moon will not change their motion when acted on by a force.
According to Newton’s first law, which characteristic of a moving object would remain constant if there were no other forces acting on it?
velocity
shape
size
Which statement explains how gravity and inertia work together?
They change the motion of objects
They keep all objects moving at the same speed.
They prevent objects from moving in a circular motion.
Which action results from the combination of gravity and inertia working on the moon?
The moon's orbit around the Earth
Earth's downward pull on the moon
Earth's gravitational pull towards the moon
Which of the moon’s properties prevents it from being pulled inward by Earth?
inertia
gravity
shape
What does the dotted line arrow show?
Moon's motion w/o gravity
force of Earth's gravity
orbit of moon around Earth
What force works between Earth and the moon?
gravity
mass
motion
Which remains the same as the distance of an object from Earth changes?
mass
gravitational force
weight
Which causes objects in the universe to resist a change in speed or direction?
inertia
gravity
forces
Which is a factor that keeps Earth in orbit around the Sun?
the gravitational pull of the sun
the continuous motion of the Universe
the orbital path of the moon
Which statement best explains why objects are pulled toward Earth’s center?
Earth has a much greater mass than the objects on the surface.
The strength of the Sun’s gravity pushes down on objects at Earth's surface.
The weight of the atmosphere pushes objects toward Earth's surface.
