How Do Objects Move Gravity

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.

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.

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NGSS.MS-PS2-4

Which statement describes Newton’s law of universal gravitation?

• Mass has little effect on gravity between objects.

• Gravity pushes objects away from Earth’s center.

• Gravity does not act between Earth and the moon.

• Every object in the universe attracts every other object.

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NGSS.MS-PS2-4

Which statement best explains why objects are pulled toward Earth’s center?

• Earth has a magnetic force that is strongest at its core.

• Earth has a much greater mass than objects on its surface.

• The weight of the atmosphere pushes objects toward Earth's surface.

• The strength of the Sun’s gravity pushes down on objects at Earth's surface.

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which pair of factors affects the force of gravity between objects?

• direction and distance

• mass and distance

• mass and shape

• shape and time

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NGSS.MS-PS2-4

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.

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

• shape and location of the object

• location of the object and how much energy the object has

• mass of the object and how much energy the object has

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NGSS.MS-PS2-4

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

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.

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NGSS.MS-PS2-4

According to Newton’s first law, which characteristic of a moving object would remain constant if there were no other forces acting on it?

• size

• mass

• shape

• speed