Which statement describes how Earth compares to the moon?
Earth has more inertia than the moon.
The moon has more gravitational pull than Earth.
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.
Which statement describes gravity?
There is no defined unit of measurement for gravity.
Gravity is the force that pulls objects toward Earth’s center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
Earth has more inertia than the moon.
Gravity is the force that pulls objects toward Earth’s center.
Which statement explains how weight is different from mass?
Mass is a varying property.
Mass is measured in newtons.
Weight is always greater than mass.
Weight is a measure of gravitational pull.
Weight is a measure of gravitational pull.
Which description explains how inertia changes the effects of gravity on objects in the solar system?
keeps the Sun stationary
pulls asteroids toward Earth
causes shooting stars to stop moving
prevents planets from pulling into one another
Inertia prevents planets from pulling into one another.
Which statement explains how gravity and inertia work together?
They change the motion of objects.
They take turns working on objects.
They keep all objects moving at the same speed.
They prevent objects from moving in a circular motion.
They change the motion of objects.
Which statement describes a newton?
It exists only for objects on Earth.
It measures the mass of an object.
It reflects the amount of force an object exerts.
It states that every object attracts another object.