New SSA Questions Contact vs Noncontact Forces Review

When you pull a pendulum weight back and let it swing, ___________ is the force that pulls it downward.

• magnetism

• electricy

• gravity

• pulling

Which statement best summarizes the amount of energy in the pendulum at position 3?

• all kinetic energy

• one-half potential energy and one-half kinetic energy

• all potential energy

• no kinetic and no potential energy

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Why does the pendulum move from position 1 toward position 3 when released?

• Earth has more mass than the pendulum, so the gravitational force between the two pulls the pendulum down toward Earth.

• The students push the pendulum as they release it, so the force of their hands on the weight causes it to move downward.

• The string pulls upward and to the right on the weight, causing it to move in the direction of the net force.

• The magnetic field of the Earth exerts force on the pendulum, causing it to move downward from the fulcrum.

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

If you only needed to measure the effect of distance on gravitational force and you were designing an experiment to do this, which set(s) of measurements would NOT be necessary to get the results you need?

• Set A

• Set B

• Set C

• Sets B and C

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NGSS.MS-ETS1-1

Based on the picture, which statement provides the best evidence that gravitational forces are attractive?

• The arrow on each sphere points toward the other sphere in that pair.

• In each pair of spheres, one arrow points left and the other points right.

• The force on each sphere cancels out the force on the other sphere in that pair.

• In each pair of spheres, the forces have the same strength.

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NGSS.MS-PS2-4

Mary and Peter observe a natural phenomenon — when they drop a golf ball it falls to the floor. They perform this operation several times, and each time they drop the golf ball, it falls to the floor. Which statement below best identifies the scientific law they are observing?

• the law of conservation of mass

• the law of gravity

• the law of superposition

• the law of conservation of erngy

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NGSS.MS-PS2-4

If objects 1 and 2 are magnets, what would you hypothesize would happen if objects 1 and 2 were placed close together?

• Object 2 will attract object 1 with magnetic force because they are oppositely charged.

• Object 2 will repel object 1 with magnetic force because they are similarly charged.

• Object 2 will have no effect on object 1 because they are neutrally charged.

• Object 2 will attract object 1 with gravitational force because it is larger in mass.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Based on the images from Alex’s investigations, which of the following statements is true?

• Magnetic forces are acting only on the objects in images B and C.

• Electrical forces are acting on the object in image D.

• The object in image A is being affected only by gravitational forces.

• The objects in images B, C, and D are all similarly charged.

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NGSS.MS-PS2-3

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following conclusions is supported by the data?

• Smaller objects have a greater magnetic force than larger objects

• The magnetic cube is switching the direction of its charge over time

• Magnetic forces are stronger than gravitational forces

• The object in B is made from a magnetically charged material, like a metal, rather than plastic

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NGSS.MS-PS2-3

Which are possible charges on the right sphere in Part A of the diagram?

• positive only

• positive or uncharged

• negative only

• negative or uncharged

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NGSS.MS-PS2-5