Energy and Energy Stores Video and Quiz

What is the fundamental principle of energy discussed in the video?

• Energy can be created and destroyed

• Energy exists in a single form

• Energy is only important in physics

• Energy is only ever transferred between different forms and objects

Which type of energy is associated with the movement of an object?

• Magnetic energy

• Kinetic energy

• Chemical energy

• Thermal energy

What type of energy does an object possess because of its position in a gravitational field?

• Electrostatic energy

• Nuclear energy

• Gravitational potential energy

• Elastic potential energy

How can energy be transferred from one form to another?

• Mechanically, electrically, by heating, or by radiation

• Only by heating

• Only electrically

• Only mechanically

What is the term used when energy is transferred to an object?

• Energy loss

• Work done

• Energy gain

• Energy transfer

What is a system in physics?

• A type of energy

• A formula used to calculate energy

• A method of transferring energy

• A collection of matter that can exchange energy with the outside world

What distinguishes an open system from a closed system?

• An open system can exchange energy with the outside world

• An open system cannot lose or gain energy

• A closed system transfers energy only by heating

• A closed system allows energy and matter to enter or leave

What happens to the overall energy change in a closed system?

• It is unpredictable

• It decreases over time

• It increases over time

• It is always zero

What is mechanical work done?

• Transferring energy by radiation

• Using a force to move an object

• Transferring energy by heating

• When current flows

What type of energy transfer occurs when a kettle is turned on to boil water?

• Magnetic to electrostatic

• Kinetic to thermal

• Electrical to thermal

• Chemical to kinetic