Speed and Energy

A moving object will have more energy when the object–

• • moves faster.

• stops moving.

• 
  changes direction.

• loses mass.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Four identical balls are rolled from the same position at the same time. The illustration shows each ball’s starting position and ending position after rolling for two seconds.

Which ball had the most energy?

• 
  Ball 1

• Ball 2

• Ball 3

• Ball 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Two model trains are running on tracks that are lined up next to each other. The two trains are not moving at the same speed. What would cause one train to move faster than the other?

• 
  The slower train’s cars have less mass.

• 
  The faster train has more energy.

• The faster train has a wider track.

• 
  The slower train has an older engine.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Students investigate balls as they roll down ramps and discover the higher the ramp, the more energy the ball is given. Which observation would be evidence for the idea that rolling balls that contain more energy travel faster?

• Balls that roll down ramps 20 centimeters high go faster than balls that roll down ramps 10 centimeters high.

• Balls that roll down ramps 30 centimeters high go fast at first, but then they slow down and stop.

• Balls that roll down ramps 10 centimeters high go faster on a tile floor than on a carpeted floor.

• 
  Balls that roll down ramps 20 centimeters high never travel any farther than 250 centimeters.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

We observe a moving object. When we observe the object moving more slowly, we know that it–

• will move in a new direction.

• has more gravity pulling on it.

• can’t go back to where it started.

• 
  has less energy than it had before.

Tags

NGSS.MS-PS3-5

Which will have more energy—a swing being pushed by a small child or a swing being pushed by an adult?

• The swing being pushed by a child

• The swing with the child under it

• The swing being pushed by an adult

• The swing with the adult sitting in it

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Look at the racing data below. Which airplane had the most energy?

• Airplane 1

• Airplane 2

• Airplane 3

• The Car

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Look at the racing data below. Which one had the least energy?

• The car

• Airplane 1

• Airplane 2

• Airplane 3

A student has some short and tall ramps and a toy car. She decides to use them to create an investigation. She wants to know which ramp will give the car the most energy. What evidence should she look for?

• Which ramp makes the car stay still

• Which ramp makes the car fall

• Which ramp makes the car move faster

• Which ramp has more than 2 cars

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-2

That which is needed to do work

• Decrease
  

• Increase

• Energy

• Speed

Tags

NGSS.MS-PS3-5