Unit 4 Test - Forms of Energy & Electricity

Front

What type of energy is required for mechanical activities?

Back

Mechanical energy is required for activities that involve movement or physical work.

Front

In a circuit, what happens when all switches are closed?

Back

When all switches are closed, all components in the circuit receive power and function, meaning all lights will be on.

Front

What are the different types of energy involved in a laser cutting process?

Back

The types of energy involved include mechanical energy (movement of the laser), thermal energy (heat generated), and light energy (from the laser itself).

Front

Which switches can be open in a circuit while still allowing all components to function?

Back

Switches 1 and 3 can be open while still allowing the lightbulbs, buzzers, and motors to work.

Front

What type of energy does a battery-operated lamp use to produce light?

Back

The lamp uses electrical energy from the battery to produce light.

Front

Define electrical energy.

Back

Electrical energy is the energy caused by the movement of electrons through a conductor.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object that is used to do work.

Front

How does a circuit work?

Back

A circuit works by providing a closed loop for electrical current to flow, allowing components like lights and motors to operate.

Front

What is the role of switches in a circuit?

Back

Switches control the flow of electricity in a circuit; they can open (stop flow) or close (allow flow) the circuit.

Front

What is the principle of energy conservation in mechanical systems?

Back

The principle of energy conservation states that energy cannot be created or destroyed, only transformed from one form to another.