1.
Which is an example of potential energy?
Correct Answer
A. A car at the top of a hill
Explanation
A car at the top of a hill is an example of potential energy because it possesses stored energy due to its position. The car has the potential to move and convert that stored energy into kinetic energy when it starts to roll down the hill. Potential energy is dependent on an object's position or condition, and in this case, the car's position at the top of the hill gives it the potential to possess energy that can be converted into motion.
2.
What is potential energy?
Correct Answer
A. The stored energy of an object due to its position or condition
Explanation
Potential energy refers to the stored energy possessed by an object as a result of its position or condition. This energy is not currently being used, but has the potential to be converted into other forms of energy and perform work. It is dependent on factors such as the object's height, mass, and the force acting upon it.
3.
What is kinetic energy?
Correct Answer
B. The energy that an object possesses due to its motion
Explanation
Kinetic energy is the energy that an object possesses due to its motion. When an object is in motion, it has the ability to do work or cause a change. This energy is directly related to the object's mass and its velocity. The faster an object moves or the heavier it is, the more kinetic energy it has. Kinetic energy can be transferred from one object to another, such as when a moving car collides with another object and transfers its energy.
4.
Which is an example of kinetic energy?
Correct Answer
B. A frisbee flying through the air
Explanation
A frisbee flying through the air is an example of kinetic energy because it is in motion. Kinetic energy is the energy possessed by an object due to its motion. In this case, the frisbee is moving through the air, so it has kinetic energy. The ball lodged in a tree and the car in the garage are not examples of kinetic energy as they are not in motion.
5.
Which has the greatest kinetic energy?
Correct Answer
C. A person running down a hill
Explanation
A person running down a hill has the greatest kinetic energy because kinetic energy is directly proportional to the mass and square of the velocity of an object. When a person is running down a hill, they have both mass and velocity, resulting in a higher kinetic energy compared to a person running up a hill or a ball rolling down a hill.
6.
Which is an example of potential energy?
Correct Answer
A. An object that is not moving
Explanation
An object that is not moving is an example of potential energy because it possesses the potential to do work or to be in motion. Potential energy is stored energy that an object has due to its position or condition. In this case, the object has the potential to be in motion if acted upon by an external force.
7.
When is kinetic energy transferred from one object to another?
Correct Answer
C. Both options are right
Explanation
Kinetic energy is transferred from one object to another in two scenarios: when the first object crashes with the second object and when both objects are force-crashed by a person. In the first scenario, the kinetic energy of the moving object is transferred to the second object upon collision. In the second scenario, a person applies force to both objects, causing their kinetic energy to be transferred. Therefore, both options are correct explanations for when kinetic energy is transferred from one object to another.
8.
Can you create or destroy energy?
Correct Answer
C. It can be transformed or converted into another form
Explanation
Energy cannot be created or destroyed according to the law of conservation of energy. However, it can be transformed or converted from one form to another. This is known as the principle of energy conservation. Energy can change from potential to kinetic, thermal to mechanical, or any other form of energy. This principle is fundamental in understanding various natural processes and the behavior of energy in different systems.