Energy transfer and transformations Pre-test

______________________ occurs when energy changes from one form to another.

• Energy transformation

• Energy transfer

• Energy balance

• Energy equilibrium

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-3

The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-2

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

• 
• 
• 

Tags

NGSS.MS-PS3-2

NGSS.MS-PS2-4

A scientist performed an experiment during which she measured the energy transferred in each step of her experiment. The total quantity of energy transferred in all of the steps was less than the amount she measured at the beginning. What is the most likely explanation for this result?

• Energy was destroyed during certain steps in the experiment.

• The steps in the experiment required more energy than was available.

• The experiments created energy that was then used up at a faster rate.

• Some energy was transformed into unwanted heat or sound that was not detected.

Tags

NGSS.MS-PS3-4

A hockey player uses her stick to hit a hockey puck. Which statement describes the overall energy transfer?

• Energy is transferred from the stick to the puck.

• Energy is transferred from the player to the puck.

• Energy is transferred from the puck to the player.

• Energy is transferred from the stick to the player.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Where does most of the energy go in this transformation.

• Electrical energy
• Light
• Heat
• other

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS1-4

Where does most of the energy go for this transformation.

• heat
• electrical
• light
• joules

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS1-4

The energy efficiency shown in this Sankey diagram is:

• About 10%.

• About 30%.

• About 60%.

• Impossible to tell.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What is the difference between energy transfer and transformation?

• They are the same

• Transfer is energy moving to a different location. Transformation is energy changing forms.

• Transfer is energy changing forms. Transformation is energy moving to a different location.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS3-3

During an experiment, what is the variable that you are CHANGING?

• Control Variable

• Independent Variable

• Dependent Variable