Question 1

When a battery-powered flashlight is turned on, what energy transformation is primarily taking place to produce light?

Accepted Answer

Chemical energy is transformed into electrical energy, which is then transformed into radiant energy.

Answer

Mechanical energy is transformed into potential energy, which is then transformed into sound energy.

Answer

Nuclear energy is transformed into mechanical energy, which is then transformed into radiant energy.

Answer

Radiant energy is transformed into chemical energy, which is then transformed into thermal energy.

Question 2

Which of the following scenarios best represents the transformation of mechanical kinetic energy into thermal energy?

Accepted Answer

A person rubs their hands together rapidly to warm them up.

Answer

A toaster is plugged into a wall outlet to brown a slice of bread.

Answer

A solar panel sits on a roof absorbing sunlight to power a house.

Answer

A ball sits at the top of a steep hill before it starts to roll.

Question 3

Which energy transformation occurs at a hydroelectric dam when falling water turns a turbine to generate electricity?

Accepted Answer

Gravitational potential energy is converted into mechanical kinetic energy, which is then converted into electrical energy.

Answer

Chemical energy is converted into thermal energy, which is then converted into electrical energy.

Answer

Radiant energy is converted into nuclear energy, which is then converted into mechanical energy.

Answer

Electrical energy is converted into gravitational potential energy, which is then converted into sound energy.

Question 4

An electric fan is plugged into a wall outlet and turned on. Which energy transformation is the primary purpose of this device?

Accepted Answer

Electrical energy is transformed into mechanical kinetic energy.

Answer

Thermal energy is transformed into nuclear energy.

Answer

Mechanical energy is transformed into chemical potential energy.

Answer

Chemical energy is transformed into radiant energy.

Question 5

Which of the following describes the energy transformation that occurs during the process of photosynthesis in green plants?

Accepted Answer

Radiant energy is transformed into chemical energy.

Answer

Chemical energy is transformed into radiant energy.

Answer

Thermal energy is transformed into mechanical energy.

Answer

Electrical energy is transformed into nuclear energy.

Question 6

When a person plays a guitar, they pluck a string causing it to vibrate and produce sound. Which energy transformation is occurring in this process?

Accepted Answer

Mechanical kinetic energy is transformed into sound energy.

Answer

Nuclear energy is transformed into radiant energy.

Answer

Electrical energy is transformed into chemical energy.

Answer

Thermal energy is transformed into gravitational potential energy.

Question 7

An archer pulls back a bowstring and holds it in place before releasing the arrow. Which statement correctly identifies the transformation of energy that occurs when the string is released?

Accepted Answer

Elastic potential energy is transformed into mechanical kinetic energy.

Answer

Radiant energy is transformed into gravitational potential energy.

Answer

Chemical potential energy is transformed into electrical energy.

Answer

Thermal energy is transformed into nuclear energy.

Question 8

When a car engine burns gasoline to move the pistons and propel the vehicle forward, which sequence of energy transformations is primarily occurring?

Accepted Answer

Chemical energy is transformed into thermal energy, which is then transformed into mechanical energy.

Answer

Mechanical energy is transformed into gravitational potential energy, which is then transformed into chemical energy.

Answer

Nuclear energy is transformed into electrical energy, which is then transformed into sound energy.

Answer

Electrical energy is transformed into radiant energy, which is then transformed into nuclear energy.

Question 9

A student drops a basketball from a height of

2

meters. As the ball falls toward the floor, which best describes the energy transformation taking place?

Accepted Answer

Gravitational potential energy is transformed into mechanical kinetic energy.

Answer

Chemical potential energy is transformed into radiant energy.

Answer

Mechanical kinetic energy is transformed into gravitational potential energy.

Answer

Electrical energy is transformed into thermal energy.

Question 10

When a person eats a healthy meal and then goes for a jog, what sequence of energy transformations is primarily occurring?

Accepted Answer

Chemical potential energy is transformed into mechanical kinetic energy and thermal energy.

Answer

Electrical energy is transformed into radiant energy and gravitational potential energy.

Answer

Mechanical kinetic energy is transformed into nuclear energy and chemical energy.

Answer

Radiant energy is transformed into electrical energy and sound energy.

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