Unit 3: Practice

Which describes gravity?

• Non-contact force that pulls objects toward each other, affected by mass and distance

• Contact forces two surfaces exert when they push or rub against each other; affected by the type of surfaces involved and how they are pushed

• No contact forces that can be either push or pull; direction is dependent on orientation and strength of an object

• Force exerted on an object by a person or another object

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which describes friction?

• Non contact force that pulls objects toward each other; affected by mass and distance

• Contact force two surfaces exert when they push or rub against each other; affected by the type of surfaces involved and how hard they are pushed

• Non-contact force that can be either a push or a pull; direction is dependent on orientation and strength of an object

• Force exerted on an object by a person or another object

Which describes magnetism?

• Non contact force that pulls objects toward each other; affected by mass and distance

• Contact force two surfaces exert when they push or rub against each other; affected by the type of surfaces involved and how hard they are pushed

• Non-contact force that can be either a push or a pull; direction is dependent on orientation and strength of an object

• Force exerted on an object by a person or another object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which describes applied forces?

• Non contact force that pulls objects toward each other; affected by mass and distance

• Contact force two surfaces exert when they push or rub against each other; affected by the type of surfaces involved and how hard they are pushed

• Non-contact force that can be either a push or a pull; direction is dependent on orientation and strength of an object

• Force exerted on an object by a person or another object

Sally drops a ball from the second floor of a building. She drops the ball again, but this time from the third floor. She uses the same ball both times.

How would the force change the second time?

• Decrease, because the gravity acts on it less from a higher drop

• Increase, because a taller drop means that there is more force acting on it

• Stays the same, because it is the same ball

• Stays the same, because she is dropping it from the same location

Tags

NGSS.MS-PS2-2

When I am pushing a couch across the living room, what force is acting on the couch in the opposite direction?

• None, my pushing is the only force acting on the object

• Gravity force

• Magnetic force

• Friction force

Tags

NGSS.MS-PS2-1

What force is perpendicular to the surface an object is being pushed or pulled across?

• Applied force

• Gravity force

• Normal force

• Abnormal force

In which direction does gravity pull?

• Directly down to the center of the Earth

• In the same direction as applied force

• Opposite to the direction something is being pulled or pushed

• Gravity is not constantly acting on all objects/people

Tags

NGSS.5-PS2-1

Gravity is an ________ only force that pulls objects toward other objects.

• attractive

• repellent

• push

• magnetic

Tags

NGSS.MS-PS2-4

The greater the mass, the greater the ________ ______.

• friction force

• magnetic force

• gravitational force

• applied

Tags

NGSS.MS-PS2-4