REVIEW FOR BENCHMARK

Newton's 1st Law is the law of INERTIA. What is inertia? Select all that apply

• objects are rest stay at right unless an outside force acts on them

• objects in motion stay in motion unless an outside force acts on them

• every action has an equal and opposite reaction

• more force is required to move an object with more mass

Objects that are moving tend to keep moving unless something stops them and objects are rest tend to remain at rest unless something makes them move. What is this called?

• friction

• gravity

• volume

• intertia

What does Newton's 3rd Law state?

• objects at rest stay at rest unless an outside forces acts on them and objects in motion stay in motion unless an outside force acts on them

• every action has an equal and opposite reaction

• friction and gravity can speed up a moving object

• an object with less mass requires less force to move

Tags

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Newton's 2nd Law states that force is equal to mass times accelerations (F = M x A)

Which statements about mass and force are true? Select all that apply.

• the more mass an object has, the more force is required to move it

• the more mass an object has, the more force is required to stop it moving

• the more mass an object has, the less inertia it has.

• the less mass an object has, the more force is required to move.

• mass has nothing to do with how much force is required to start or stop a moving object

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NGSS.MS-PS2-2

Which are examples of NONCONTACT forces? Select all that apply.

• friction of the ground on a car's tires

• gravity pulling a baseball back to the ground after it is hit

• magnetism pulling a magnet toward metal

• a push on an object to get it to move.

• pulling a sled up a hill

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which is an example of kinetic energy?

• a pancake on a plate

• a softball after it is hit by a bat

• a person pushing against a brick wall

• a student in a chair, looking at a book

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Motion is the change in the __________________ of an object.

• mass

• position

• volume

• density

When forces are balanced,

• objects are set in motion

• there is no change in the motion of an object

• an object always moves upwards

• the motion of an object becomes faster

Tags

NGSS.MS-PS2-2

Which tool helps an astronomer see objects in space more clearly by causing them to appear larger?

• microscope

• telephone

• telescope

• star chart

Which tool helps a person identify the patterns of the stars and constellations in the night sky?

• telescope

• star chart

• magnifying glass

• microscope