Science Assessment

NG074004

Assuming that no energy is transferred between a ball and the curved track it is moving in, or between the ball and the air around it, the ball will move to a height equal to the height from which it started.

67%

NG086003

Assuming no energy transfer between a roller coaster car and the track it is moving in or between the car and the air around it, all of the hills that a roller coaster car can get over must be lower than the height of the starting point.

63%

NG104002

Assuming no energy transfer between a ball and the track it is moving in, the speed of the ball will be the same before and after rolling down into and up out of a dip because the total amount of energy in the system does not change.

49%

NG095003

The total amount of energy a ball has does not change after it goes down and up a dip because the total energy of the system (ball and track) does not change (assuming no energy transfer between the ball and the track and the ball and the air around it).

45%

NG096003

The total amount of energy a ball has does not change after it goes down and up a dip because the total energy of the system (ball and track) does not change (assuming no energy transfer between the ball and the track and the ball and the air around it).

39%

NG093003

Assuming no energy transfer between a ball and the track it is moving in, the amount of energy the ball has after it goes over a hill will be the same as before it went over the hill because the total amount of energy in the system did not change.

24%

NG069005

In a situation involving two slides, and assuming no energy transfer between the slides and the students sliding on them or between the students and the air around them, two students of the same mass sliding down differently shaped slides will have the same speed at the bottom of the slides because the only source of motion energy is the change in gravitational potential energy, and both students experience the same change in gravitational potential energy.

22%

NG094003

Assuming no energy transfer between a ball and the track it is moving in, the amount of energy the ball has after it goes over a hill will be the same as before it went over the hill because the total amount of energy in the system did not change.

22%

NG085003

Assuming that no energy is transferred between a ball and the curved track it is moving in, or between the ball and the air around it, the ball will not have enough energy to go over a hill that is higher than the height from which it started because the total energy of the system has to remain the same.

22%

NG082004

When an apple falls from a tree, the apple has less energy when it is on the ground that it did when it was on the tree.

20%

NG087004

A roller skater, who coasts down one hill and up another hill that is the same height as the first hill, will not have enough energy to reach the top of the second hill because some of her motion energy is transformed into thermal energy.

18%

NG071003

Assuming that no energy is transferred between a ball and the curved track it is moving in, or between the ball and the air around it, the ball will move down the track and then up to a point equal to the height from which it started.

17%

NG070003

Assuming that no energy is transferred between a ball and the curved track it is moving in, or between the ball and the air around it, the ball will move to a height equal to the height from which it started.

11%

NG065005

A pendulum stops swinging because the motion energy of the ball is transferred somewhere else, like the air, as the ball swings from side to side.

57%

NG006005

When a pine cone falls from a tree, its gravitational potential energy decreases and its motion energy increases because its gravitational potential energy is transformed into motion energy.

24%

NG011004

When a box slows down as it slides across the floor, the motion energy of the box decreases and the thermal energy increases because the motion energy is converted into thermal energy.

21%

NG005004

As a piece of clay falls, its gravitational potential energy is converted to motion energy, and as it hits the floor its motion energy is converted into thermal energy.

19%

NG014003

As a rubber balls falls to the floor, the motion energy of the ball increases and the gravitational potential energy of the ball decreases because the gravitational potential energy is transformed into motion energy.

18%

NG013003

As a rubber balls falls to the floor, the motion energy of the ball increases and the gravitational potential energy of the ball decreases because the gravitational potential energy is transformed into motion energy.

17%

NG015004

As a ball rolls down a ramp, the gravitational potential energy of the ball decreases and the motion energy of the ball increases because gravitational potential energy is transformed into motion energy.

16%

NG051002

When a rubber band is used to shoot a toy car across the floor, the rubber band has less energy because energy was transferred to the car.

14%

RG152002

As a boy pushes a girl on a swing, the boy’s energy decreases, and the girl’s energy increases because the boy transferred some of his energy to the girl when he pushed her.

13%

NG012003

When a ball bounces off a floor, the elastic energy of the ball is converted into motion energy and gravitational potential energy.

12%

RG047003

If a weightlifter drops a weight on their toes, it will hurt more if it is dropped from 6 feet than if it is dropped from 3 feet because the higher an object is the more energy it has.

10%

NG079003

The motion energy of a book sliding across a table is transformed into thermal energy, not into a force.

9%

NG007004

When you let go of a stretched rubber band, the elastic energy that the rubber band has when it is stretched is converted into motion energy.

7%