1.1

A push or a pull on an object is an example of

• force.

• weight.

• energy.

• work.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which best represents the relationship between force and the mass of an object?

• The greater the force, the smaller the object.

• The smaller the force, the smaller the object.

• The force on an object determines what density it has.

• The greater the mass of an object, the greater the force needed to

  move it.

Tags

NGSS.MS-PS2-2

In order for someone to push a heavy box 10 meters across a floor, which must happen?

• The force of the person pushing must be greater than the force of friction.

• The force of the person pushing must be less than the force of friction.

• The force of the person pushing must be less than the force of gravity.

• The force of the person pushing must be greater than the force of gravity.

Tags

NGSS.MS-PS2-2

What can cause a moving object to increase its speed in a forward direction?

• a force pushing on the object from the opposite direction

• a force that continually acts on the object in the direction the object is moving

• an increase in the mass of the object

• a decrease in the mass of the object

Tags

NGSS.MS-PS2-2

What can the students do to increase the speed that the marble will roll down the ramp?

• add a layer of carpet to board

• lower the height of the board

• use a longer board for the ramp

• replace the board with a smoother board

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Why do planets stay in orbit around the Sun?

• attraction of gravity

• effect of inertia

• frictional force

• rotational force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A pencil falls off of a desk. What moves the pencil toward the floor?

• mass

• friction

• gravity

• speed

Tags

NGSS.MS-PS2-4

In a science lab, students measured how long it took for a block to slide down a ramp. What were the students comparing in this experiment?

• the amount of frictional force acting on the block

• the amount of gravitational force acting on the block

• the amount of frictional force acting on the ramp

• the amount of gravitational force acting on the ramp

Tags

NGSS.MS-PS2-2

What would be the best way to compare this force?

• Measure the distance each time the car comes to a stop.

• Measure the amount of time it takes the car to travel down the ramp.

• Measure the distance the car travels with each push.

• Measure the amount of time it takes for the car to come to a stop

When two objects are dropped from the same height, they will land at the same time. Which best explains why this happens?

• mass

• friction

• gravity

Tags

NGSS.MS-PS2-4