Energy and Thermodynamics Quiz

Describe the relationship between work and energy.

• Energy is the absence of work
• Work and energy are completely unrelated
• Work is the transfer of energy from one object to another.
• Energy is only used for physical activity, not work

Answer explanation

Energy is the ability to do work.

How is the kinetic energy of an object determined?

• By calculating the object's potential energy
• By measuring the object's weight
• Using the formula KE = mass * velocity
• Using the formula KE = 0.5 * mass * velocity^2

What factors determine the gravitational potential energy of an object?

• Volume, density, and pressure
• Color, shape, and temperature
• Mass, acceleration due to gravity, and height
• Speed, distance, and time

Thermal energy flows spontaneously from warm objects to

• cooler objects
• hotter objects

When you heat a pot of water over a flame, what form of energy is added to the water?

• Thermal energy
• Potential energy
• Kinetic energy
• Chemical energy

What kind of energy is represented by an archer stretching a bow string?

• Elastic energy

• Solar energy
• Nuclear energy
• Kinetic energy

Can an object have both kinetic energy and potential energy at the same time?

• No
• Yes
• Only if it's stationary
• Depends on the object's mass

What is the formula used to calculate an object's kinetic energy?

• mass * velocity^2
• 1/2 * mass * velocity
• mass + velocity^2
• 1/2 * mass * velocity^2

Calculate the kinetic energy of a 0.25-kg toy car traveling at a constant velocity of 2 m/s.

• 0.5 J
• 0.25 J
• 2 J
• 1 J

What is potential energy?

• The energy that an object has due to its color
• The energy that an object has due to its position or state
• The energy that an object has due to its temperature
• The energy that an object has due to its speed