P. 2.6

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

• mass

• friction

• gravity

• speed

Tags

NGSS.5-PS2-1

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

How does friction affect speed?

• more friction decreases speed

• more friction increases speed

• less friction decreases speed

Tags

NGSS.MS-PS3-5

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

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 will most likely stop an object in motion?

• mass

• force

• acceleration

Tags

NGSS.MS-PS2-2

Carey left a bowling ball and kickball outside on a windy day. Which best explains why the kickball moved but the bowling ball did not?

• The kickball has less mass so it was easier to move.

• The force of gravity acting on the bowling ball is greater.

• The mass of the kickball is greater so it is easier to move.

Tags

NGSS.MS-PS2-2

Which is the best example of unbalanced forces acting on an object?

• A. a boy sitting on a chair

• B. a dog holding a ball in its mouth

• C. a girl jumping off her skateboard

• D. a marble rolling at a constant speed

Tags

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