#1
Which of the following best describes the law of conservation of energy?
Energy cannot be created or destroyed, only transformed from one form to another.
Energy can be created or destroyed at will.
Energy is only conserved in closed systems.
Energy is only conserved in mechanical systems.
#2
In a roller coaster ride, when the car moves to the top of a hill, its potential energy ________.
Increases
Decreases
Remains constant
Transforms into kinetic energy
#3
Which of the following is an example of elastic potential energy?
A stretched rubber band
A moving train
A falling leaf
A burning candle
#4
What is the unit of energy in the International System of Units (SI)?
#5
Which of the following is not a type of potential energy?
Gravitational potential energy
Elastic potential energy
Chemical potential energy
Kinetic potential energy
#6
Which of the following is an example of kinetic energy?
A stretched spring
A stationary object
A moving car
A book placed on a table
#7
A 5 kg object is moving with a velocity of 10 m/s. What is its kinetic energy?
#8
Which of the following energy transformations occurs in a hydroelectric power plant?
Chemical energy to electrical energy
Mechanical energy to electrical energy
Nuclear energy to electrical energy
Potential energy to kinetic energy
#9
In a swinging pendulum, where does the maximum potential energy occur?
At the highest point
At the lowest point
At the midpoint
At any random point
#10
Which of the following is a form of non-mechanical energy?
Kinetic energy
Potential energy
Thermal energy
Gravitational energy
#11
Which of the following situations violates the law of conservation of energy?
A pendulum swinging back and forth
A car rolling to a stop due to friction
A ball bouncing up and down on the floor
A light bulb glowing due to electrical energy
#12
What happens to the total mechanical energy of a system if only non-conservative forces act on it?
Remains constant
Increases
Decreases
Cannot be determined
#13
Which of the following statements is true regarding the law of conservation of energy?
It applies only to mechanical energy.
It applies only to closed systems.
It applies to all forms of energy and all systems.
It doesn't apply to potential energy.
#14
Which of the following is an example of a conservative force?
Friction
Gravity
Air resistance
Tension in a rope
#15
In an isolated system, what happens to the total mechanical energy over time?
It remains constant.
It continuously decreases.
It continuously increases.
It fluctuates unpredictably.