When an object speeds up, slows down, or changes directions, it ______. 

• accelerates
• velocity
• motion
• momentum

Tags

NGSS.MS-PS2-2

A car moves along a road that has markers every kilometer.   Over time, it passes the markers in shorter periods of time.  What best describes the motion of the car? 

• The car is maintaining the same speed.
• The car is changing direction.
• The car is increasing speed.
• The car is decreasing speed.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

If two objects have the same mass but different velocities, which object has the greater momentum?

• The object with the greater velocity.
• The object with the least velocity.
• The one that does not move.
• none of the above

Tags

NGSS.HS-PS2-2

We use a __________ to measure force.

• balance
• thermometer
• spring scale
• yard stick

________________________ is a force that opposes the motion of one object moving past another.   It causes objects to slow down or stop. 

• balanced force
• friction
• inertia
• gravity

Carrie has gone down a slide several times.  However, she wants to go down the slide faster.  How can she increase her speed down the slide? 

• pour sand on the slide
• pour rocks on the slide
• carry rocks down the slide
• pour water on the slide

Tags

NGSS.MS-PS3-5

Kayla's scout troop rowed two boats on a lake.  The rowers in each boat applied the same amount of force. Which best describes why the boat with three scouts moved through the water faster than the boat with five scouts?

• The mass of the boat with 3 scouts was less than the mass of the boat with 5 scouts. 
• The force of friction between the oars and the water made the boat with three scouts move faster.
• The boat with 5 scouts had more rowers. 
• The boat with 3 scouts was bigger.

Tags

NGSS.MS-PS2-2

Any push or pull from one object to another.

• force
• inertia
• gravity
• momentum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How do you calculate the average speed of a moving object? 

• mass divided by volume
• distance divided by time
• mass times velocity
• velocity times mass

Tags

NGSS.MS-PS3-1

If the same force is applied to each object, which will have the greatest acceleration? 

• bus
• bike
• car
• truck

Tags

NGSS.MS-PS2-2