Quiz: Energy (introduction)

What is energy?

• Energy is the sound of music
• Energy is the taste of chocolate
• Energy is the ability to do work or cause change.
• Energy is the color of the sky

What is mechanical energy?

• Mechanical energy is the sum of potential energy and kinetic energy in a system.
• Mechanical energy is the energy generated by sound waves.
• Mechanical energy is the energy stored in the nucleus of an atom.
• Mechanical energy is the energy produced by chemical reactions.

Which case best describes kinetic energy?

• When a moving car collides with another car
• When a book is sitting on a shelf
• When a person is sleeping
• When a plant is growing

Which case best describes potential energy?

• A car moving at a constant speed
• A ball held above the ground
• A person running

What unit does SI use to measure energy or work?

• Volt
• Newton
• Watt
• Joule (J)

What does the law of conservation of energy explain?

• Energy can only be transformed into matter
• Energy cannot be created or destroyed, only transformed from one form to another.
• Energy can be destroyed completely
• Energy can be created out of nothing

What is the height where potencial energy and kinetic energy have the same value?

• Highest point of the object's motion
• Midpoint of the object's motion
• Lowest point of the object's motion
• At rest position

What is the height where potential energy is full?

• Lowest point of motion
• Middle point of motion
• Highest point of motion
• Random point in motion

What is the point where kinetic energy is full?

• Minimum speed
• Zero speed
• Maximum speed or velocity
• Halfway point

One of these options is not a type of energy (in physics)

• Nuclear

• Normal force

• Thermal

• Mechanical