Practice Test_Energy Transformation/PE/KE

A battery is used to light a bulb.

What energy transformations are taking place?

• Heat→electrical→light

• electrical→light→solar

• mechanical→light→electrical

• chemical→electrical→light

A student cuts out fins in a paper cup and hangs the cup on a metal stand. The student plans to place the metal stand by a windowsill and expects the paper cup to rotate as the wind blows.

What kind of energy does the cup possess before the student places the metal stand by a windowsill?

                                  

                                          

 

• chemical energy       

• heat energy      

• elastic energy

• potential energy

Tags

NGSS.MS-PS3-2

Amanda listed a few observations in her notebook.

 In which observation(s) is kinetic energy transformed to potential energy?

                  

 

• a. observation 1   

• b. observation 4

• c. observations 1 and 2            

• d. observations 2 and 3

Tags

NGSS.MS-PS3-2

A stone is placed in a thick rubber band. The rubber band is stretched and then released. The stone rises in the air and then falls down. Which option correctly identifies an instance when potential energy is transformed into kinetic energy?

• a. releasing the rubber band

• b. stretching the rubber band

• c. stone rising in the air

• d. stone reaching its highest point in the air

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

A student wraps a metal sheet around a copper wire. She then hammers the metal sheet several times. The temperature of the sheet rises, and it becomes even more flat. Which type of energy transformation does the example involve?

                          

                      

• a. kinetic energy into heat energy   

• b. potential energy into heat energy    

• c. kinetic energy into chemical energy

• d. potential energy into chemical energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A baseball pitcher holds the ball close to his chest and then moves it behind his head before throwing the ball toward the catcher. He then gets back to the initial position before the next pitch.

In which position does the baseball possess potential energy?

• a. When the ball is held close to the pitcher’s chest.

• b. When the ball is moving away from the pitcher’s body.

• c. When the ball is thrown toward the catcher.

• d. When the ball is thrown away from the catcher.

The diagram shows an electric circuit. 

What is the correct sequence of energy transformation that occurs when the switch is moved to the on position?

• a. chemical energy → light energy → heat energy

• b. chemical energy → heat energy → electrical energy

• c. chemical energy → electrical energy → light energy

• d. chemical energy → light energy → electrical energy

Tags

NGSS.MS-PS3-5

Patrick is working with a corded drill. He observes that when he presses the trigger, the drill bit rotates and helps to drill a hole in the wall. Which energy transformation is taking place in this process?

• a. chemical energy to electrical energy

• b. electrical energy to chemical energy

• c. electrical energy to mechanical energy

• d. mechanical energy to electrical energy

A student notices that every time the button for the doorbell is pressed, the doorbell rings. As soon as the button is released, the doorbell stops ringing. What kind of energy transformation takes place when the switch of the doorbell is pressed?

• a. electrical energy to sound energy

• b. mechanical energy to heat energy

• c. chemical energy to electrical energy

• d. electrical energy to chemical energy

Tags

NGSS.MS-PS3-5

The J. Strom Thurmond Dam on the Savannah River is a power plant that can provide electricity to parts of Georgia and South Carolina. Which transformations of energy most accurately represent the process that occurs at the J. Strom Thurmond Dam that turns the natural flow of a river into usable household energy?

• a. electrical energy → mechanical potential energy → mechanical kinetic energy

• b. mechanical potential energy → mechanical kinetic energy → electrical energy

• c. mechanical potential energy → electrical energy → mechanical kinetic energy

• d. mechanical kinetic energy → mechanical potential energy → electrical energy