8th Grade Physical Science GMAS Review Force and Motion

Inertia is best described as 

• the tendency for objects to resist force.
• the tendency for objects to move.
• the tendency for objects to resist changes in motion.
• the tendency for objects to decelerate.

Pressing on the brake pedal of a car causes a brake pad to be applied to a rotor.  This application of pressure slows the rotation of he wheel, resulting in a decrease in speed of the car.  What force slows the rotation of the wheel?

• friction
• nuclear
• gravitational
• electromagnetic

Tags

NGSS.HS-PS2-1

Velocity includes both speed and

• distance
• rate of change
• time 
• direction

An unbalanced force acts on a body.  Identify the change or changes in motion the unbalanced force can produce.

• increased speed only
• increased or decreased speed only
• increased speed and direction only
• increased speed, decreased speed or direction change

Tags

NGSS.MS-PS2-2

The force that keeps a communications satellite in orbit around Earth is

• gravity
• friction
• magnetism
• electricity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A school bus is moving 55 miles per hour. Before it can go 60 miles per hour, 

• there must be less air resistance.
• an additional force must act on the bus.
• a physical change must happen.
• there must be less air resistance.

Tags

NGSS.HS-PS2-1

While riding in the backseat of a car, a child holds a cup of juice.  When the car suddenly stops, the liquid in the cup will

• flow off to one side of the cup.
• flow toward the back of the cup.
• flow in the direction the car was moving.
• stop as suddenly as the car stops.

Tags

NGSS.MS-PS2-2

A crumpled sheet of paper will fall to the ground faster than an uncrumpled sheet because crumpling the paper

• causes it to have less mass.
• changes the chemical state of the paper.
• adds potential energy.
• causes it to have less air resistance.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

A roller coaster car raced down a track going faster as it neared the bottom of a hill.  What term describes this increase in speed?

• inertia
• velocity
• potential energy
• acceleration

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

On Earth, an astronaut has a mass of 140 kg.  When the astronaut goes into space, she 

• will have a mas of 140 kg, but will have less weight.
• will have less mass and weight.
• will have a mass of 140 kg, and have a weight of 140 kg.
• will have less mass and a weight of 140 kg.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4