A and B

• F

• G

• H

• J

Tags

NGSS.MS-PS2-2

Which statement best describes the cart?

• F

• G

• H

• J

What is the difference between the velocity and the speed of an object?

• Velocity is the change in distance over time, while speed is the change in velocity over

  time.

• Velocity has a direction associated with it, while speed has no specific direction.

• Velocity has no direction associated with it, while speed has a specific direction.

• Velocity is the change in speed over time, while speed is the change in distance over time.

The pickup truck has a changing velocity because the pickup truck —

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

A large rock is motionless on a flat sidewalk. Which statement best explains why the rock remains motionless?

• There are no forces acting on the rock

• The only force acting on the rock is directed toward the sidewalk.

• The forces acting on the rock are all balanced

• The sidewalk exerts an unbalanced force on the rock.

Which statement correctly describes the reaction force between the bat and ball?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-1

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

A student claims that Earth has a magnetic field. Which evidence would best support the student's claim?

• The student creates a working circuit that illuminates a bulb using wire and a battery.

• The student turns in all directions with a compass and the needle always points north.

• The student receives a shock after walking across the carpet and touching a doorknob.

• The student rolls a ball down a large hill and the ball comes to a complete stop at the bottom

A student claims that the magnetic fields are not the same across the magnet. Using the picture, what evidence best supports the claim?

• The magnetic fields of the magnet are strongest at both poles.

• The magnetic fields of the magnet are strongest at the north pole.

• The magnetic fields of the magnet are strongest at the south pole.

• The magnetic fields of the magnet are strongest at the middle

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student claims that the gravitational force between two objects depends upon the mass of the objects and the distance between them. Which argument best supports the student's claim?

• If the distance between two objects increases, the gravitational force between the objects will decrease.

• If the distance between two objects decreases, the gravitational force between the objects will disappear.

• If the distance between two objects increases, the gravitational force between the objects will increase.

• If the distance between two objects decreases, the gravitational force between the objects will not change.

Tags

NGSS.MS-PS2-4