Parts of a Circuit
Energy Transformation in a Circuit
Electrical Energy
Conductors and insulators in a circuit
Energy Transformations
100

A student is constructing an electrical circuit. Which of the following can provide energy for the circuit? A.electric generator B. Wire C. light bulb D.buzzer

Answer: A. an electric generator

100
he type of energy a circuit always starts off with is ________________ energy.
Electrical
100

Electrical energy flows through what type of material?

Conductors

100
Some students test a plastic spoon as a connector in an electrical circuit. Electricity does not flow in the circuit. Plastic is most likely... A. a load. B. an energy source C. a conductor D. an insulator
D. an insulator
100

When you eat food, it provides energy for your body to move and grow. What type of energy transformation is happening?

Chemical energy - mechanical energy

200
What is the role of a load in an electric circuit?
The load is the part of the circuit that receives electrical energy and can be turned on.
200
Which part of a circuit changes electrical energy into another form of energy?
The load
200

Electrical energy does not flow through what type of material?

Insulators

200
Which material will best conduct electricity? A. plastic B. rubber C. wood D. silver
D. silver
200

A toaster turns electrical energy into this type of energy to toast your bread. What is this energy transformation?

Electrical energy - thermal energy

300

Name 3 examples of an energy source.

Solar energy, wind energy, fossil fuels (petrol)

300
Which device can be added to an electrical circuit to convert electrical energy into mechanical energy? A. a switch B. a lightbulb C. a fan D. a speaker
C. a fan
300

True/False: Electricity can't be converted into other types of energy?

False

300
If you connect the wires of an electric circuit to a piece of jewelry why would the lightbulb in the circuit still turn on?
Because the jewelry is made of something that can conduct electricity.
300

A solar panel on a sunny day generates electricity to power a house. What energy transformation occurs in the solar panel?

Solar energy - electrical energy

400
Explain how a switch works in an electrical circuit.
When the switch is on the circuit is closed so electricity can flow. When the switch is off the circuit is open so electricty cannot flow.
400
If an electrical circuit has a bell for a load and a battery for an energy source what energy conversions will occur?
chemical energy --> electrical energy --> sound energy
400

Electrical energy comes from the flow of what?

Electrons

400
Ms. P wants to make an electric circuit but she is fresh out of copper wire. What are 3 other household items that she could use in place of wire to carry the electricity to the load?
silverware metal necklaces steel wool keys aluminum foil etc.
400

In a hydroelectric power plant, water flows over a turbine, transforming gravitational potential energy into this type of energy before it’s converted to electrical energy.

Kinetic energy

500

Where are the load, wires, and energy source located in a lamp? 

The load is the lightbulb, the wires are located in the electrical cord and inside the lamp, and the energy source is the electrical outlet. 

500
Name a load that can transform electric energy into thermal energy and name another load that can transform electric energy into sound energy.
Thermal- lightbulb, heater, etc. Sound- radio, speaker, phone, computer etc.
500

This type of heat transfer occurs when electrical energy is transferred through a circuit and produces heat without direct contact between objects.

Radiation

500
Why do electricians use wire that is coated in plastic when they are making new circuits?
This is because the wire can be dangerous to handle and can shock humans if they handle it when the circuit is on. The plastic coating helps to protect the electricians and us!
500

There is a type of flashlight that requires you to spin a handle and create the energy need to emit light. What is the energy transformation occurring?

Kinetic energy - electrical energy - light energy

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