P11

A student uses a toy car and ramp to investigate how surface affects the speed of a rolling object. What should the student intentionally change when doing this experiment?

• The color of the toy car

• The distance the toy car travels

• The material on which the toy car rolls

• The weight of the toy car

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which two tools should be used together to measure speed?

• Balance and spring scale

• Clock and a measuring tape

• Meter stick and barometer

• Ruler and graduated cylinder

A train is moving along a track. If the forces acting on the train are balanced, how will its motion be affected?

• Change direction

• Continue, unchanged

• Speed up

• Stop

Tags

NGSS.MS-PS2-2

A force that occurs when an object rubs against another object

• thermometer

• conduction

• friction

• radiation

Something that makes an object start moving, stop moving, speed up, or slow down is a(n) .

• load

• position

• effort

• force

Tags

NGSS.MS-PS2-2

The tendency of an object to stay in motion or at rest until a force acts upon it is

• inertia

• gravity

• speed

• frame of reference

A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop?

• gravity acting on the wagon
• the mass of the wagon
• friction acting on the wagon
• the mass of the child

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Four different students take turns pushing a large, heavy ball on the school parking lot. What is the best way to determine which student used the most force to push the ball?

• compare the sizes of the students
• compare the ages of the students
• compare the distances that the ball rolled
• compare the number of times the ball was rolled

Tags

NGSS.MS-PS2-2

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

• mass
• friction
• gravity
• speed

Tags

NGSS.MS-PS2-4

Four solid balls, each with a different mass, are moving at the same speed. Which ball would require the most force to stop its motion? 

• ball with a mass of 5 kg 
• ball with a mass of 10 kg 
• ball with a mass of 15 kg 
• ball with a mass of 20 kg

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2