New SSA Questions Energy Trasformation

Which force changes the direction of the ball’s motion at Point C?

• gravity

• friction

• the student's push

• magnetic force

A student states that the total energy of the ball is greatest at Point C. Is this student correct?

• Yes, the kinetic energy is greatest at Point C, which means its total energy is the greatest at this position as well

• No, the potential energy is greatest at this point, but the total energy is the same at all of the points shown

• Yes, the potential energy is greatest at Point C, which means its total energy is the greatest at this position as well

• No, the total energy is greatest at Points A and E

Tags

NGSS.MS-PS3-5

What happens between Point C and Point E?

• The total energy of the ball decreases.

• Kinetic energy is converted to potential energy.

• Potential energy is converted to kinetic energy.

• The total energy of the ball increases.

Tags

NGSS.MS-PS3-5

Which are NOT examples of kinetic energy?

• The chemical energy stored in the grass and the apples.

• The mechanical energy of the wind making the kite fly.

• The radiant energy of the sun charging the solar panel.

• The electrical energy of the solar panel powering the lamp.

Tags

NGSS.MS-PS3-1

Which energy transformation is taking place in the grass and tree in the model above?

• transforming chemical energy into mechanical energy

• transforming mechanical energy into electrical energy

• transforming radiant energy into mechanical energy

• transforming the sun’s kinetic energy into stored potential energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

According to the Law of Conservation of Energy, we know that energy can neither be created nor destroyed.

Knowing this, what can you conclude about the energy used by the lamp?

• The lamp’s mechanical energy does not have a known source.

• The lamp’s mechanical energy comes from the electrical energy from the solar panel, which comes from the sun’s radiant energy.

• The lamp uses more energy than only what it is receiving from the solar panel.

• Once the lamp has been turned on, the energy it gives off is destroyed.

Tags

NGSS.HS-PS3-2

Maria turned on the phone with the power button. The phone vibrated and played a short tune when the screen began to load. What energy transformations occurred to make the phone vibrate?

• Mechanical energy was transformed into electrical energy that was transformed into energy of motion.

• Electrical energy was transformed into mechanical energy that was transformed into energy of motion.

• Mechanical energy was transformed into electrical energy that was transformed into sound energy.

• Electrical energy was transformed into mechanical energy that was transformed into sound energy.

Tags

NGSS.MS-PS3-5

One of the energy transformations that occurs in the phone is the transformation of sound energy into electrical energy. Based on the diagram, in what part of the phone does this take place?

• in the speaker

• in the microphone

• in the volume control

• in the headphone jack

Tags

NGSS.MS-PS3-5

Maria noticed that the charge on the battery lasted longer when the phone was used just for talking. The phone had to be recharged more often when it was used to connect to the internet or play a game. Maria’s brother complained that some of the phone’s energy was being destroyed when this happened. Why was the brother’s statement incorrect?

• The energy can be replaced by transforming electrical energy into chemical energy as the battery recharges.

• The energy is being destroyed when it is converted to the light energy used by the screen.

• The games on the phone use up the energy because the screen stays on longer than normal.

• Some of the energy was changed into heat instead of being transformed into electrical energy that the phone can use.

Tags

NGSS.MS-PS3-5

A student heats water as shown in the diagram below.

What sort of energy transformation is taking place?

• Electrical energy transforms to heat

• Heat moves from a cooler object to a warmer one

• Light energy transforms to heat

• Kinetic energy transforms to potential energy

Tags

NGSS.MS-PS1-4