Summative Test: Conductors of Heat and Electricity, Circuits

Part A: Multiple Choice (1 point each)

1. Which of the following is the best conductor of electricity? a) Rubber

b) Wood
c) Copper
d) Plastic

2. What happens in a closed circuit? a) The flow of electricity is stopped.

b) The flow of electricity continues through the circuit.
c) The battery runs out of power.
d) The wires become very hot.

3. Which of the following materials is a poor conductor of heat? a) Metal

b) Wood
c) Copper
d) Aluminum

4. In a series circuit, what happens if one light bulb burns out? a) Only the burned-out bulb stops
working, the others continue.
b) All the bulbs will stop working.
c) The power source will get damaged.
d) The light will become brighter.

5. What is the function of a switch in an electrical circuit? a) To increase the voltage

b) To open or close the circuit
c) To connect two power sources
d) To provide insulation

Part B: True or False (1 point each)

6. Heat always travels from hot objects to cooler ones.

True ___ / False ___

7. An open circuit allows electricity to flow through the components.

True ___ / False ___

8. In a parallel circuit, each component has its own separate path for electricity.
True ___ / False ___

9. Metals are generally good conductors of both heat and electricity.

True ___ / False ___

10. In a series circuit, if you add more components, the total resistance decreases.
True ___ / False ___

Part C: Short Answer (2 points each)

11. Define a conductor. Give two examples.

 12. What happens when you close a circuit?

13. Explain the difference between a series and a parallel circuit.

14. Why are materials like plastic and rubber used to insulate wires?

15. Name one advantage of a parallel circuit over a series circuit.

Part D: Labeling (3 points each)

16. Draw and label a simple open circuit.

17. Draw and label a simple series circuit with two bulbs.

18. Draw and label a simple parallel circuit with two bulbs.

Answer Key:

Part A: Multiple Choice

1. c) Copper

2. b) The flow of electricity continues through the circuit.

3. b) Wood

4. b) All the bulbs will stop working.

5. b) To open or close the circuit

Part B: True or False

6. True

7. False

8. True

9. True

10. False

Part C: Short Answer

11. A conductor is a material that allows heat or electricity to flow through it easily. Examples:
Copper, Aluminum.

12. When you close a circuit, it forms a complete loop, allowing electricity to flow and power
devices.

13. In a series circuit, components are connected in a single path, so if one part fails, the whole
circuit stops working. In a parallel circuit, components have their own separate paths, so if one
part fails, the others continue to work.
 14. Plastic and rubber are insulators, meaning they do not allow electricity to flow through them.
They are used to protect us from electrical shocks and prevent short circuits.

15. In a parallel circuit, if one bulb goes out, the others will continue to work, which is an
advantage over a series circuit where all components stop if one fails.

Part D: Labeling

16. Open Circuit Diagram:

 A battery with a gap between two wires, showing that electricity cannot flow.

 Label: Battery, Open gap.

17. Series Circuit Diagram:

 A battery, two light bulbs, and wires connected in a single loop.

 Label: Battery, Bulb 1, Bulb 2, Connecting wires.

18. Parallel Circuit Diagram:

 A battery, two light bulbs, and wires, with each bulb having its own path connected to the
battery.

 Label: Battery, Bulb 1, Bulb 2, Connecting wires, Parallel paths.

Summative Test: Conductors of Heat and Electricity, Open and Closed Circuits, Series and Parallel
Circuits

Part A: Multiple Choice (1 point each)

1. Which of the following is a good conductor of electricity? a) Wood

b) Plastic
c) Copper
d) Rubber

2. What is the role of an insulator? a) It allows electricity to flow freely.

b) It stops the flow of electricity.
c) It increases the flow of heat.
d) It stores energy.

3. In a closed circuit, the path for electricity is: a) Interrupted

b) Complete
c) Open
d) Broken

4. Which of the following materials is a poor conductor of heat? a) Metal

b) Wood
c) Copper
d) Aluminum

5. In a series circuit, if one light bulb goes out, what happens to the other bulbs? a) They all turn
off.
b) Only the burnt bulb goes out.
c) The brightness increases.
d) The circuit continues to work, but dimmer.

6. Which of the following is true about a parallel circuit? a) The current flows through each
component in a single path.
b) All components must share the same current.
c) If one component fails, the others continue to work.
d) All components are connected in a loop.

Part B: True or False (1 point each)

7. Metals like copper are good conductors of both heat and electricity.
True ___ / False ___

8. In a parallel circuit, all devices share the same path for electricity to flow.
True ___ / False ___

9. In an open circuit, electricity can flow and power devices.

True ___ / False ___

10. Rubber and plastic are good conductors of electricity.

True ___ / False ___
 11. Heat always moves from warmer objects to cooler objects.
True ___ / False ___

Part C: Short Answer (2 points each)

12. What is a conductor? Give two examples.

13. Explain what happens when you close a circuit.

14. Describe the difference between a series circuit and a parallel circuit.

15. Why is it important to use insulators like plastic or rubber around electrical wires?

16. Give one advantage of a parallel circuit over a series circuit.

Part D: Diagram (3 points each)

17. Draw and label a simple open circuit.

 Include a power source, a gap, and wires.

18. Draw and label a simple series circuit with two light bulbs.

 Include a power source, two bulbs, and connecting wires.

19. Draw and label a parallel circuit with two light bulbs.

 Include a power source, two bulbs, and separate paths for each bulb.

Answer Key:

Part A: Multiple Choice

1. c) Copper

2. b) It stops the flow of electricity.

3. b) Complete

4. b) Wood

5. a) They all turn off.

6. c) If one component fails, the others continue to work.

Part B: True or False

7. True

8. False

9. False

10. False
 11. True

Part C: Short Answer

12. A conductor is a material that allows heat or electricity to flow through it. Examples: Copper,
Aluminum.

13. When you close a circuit, you create a complete loop, allowing electricity to flow and power
the connected devices.

14. In a series circuit, all components are connected in a single path, so if one part fails, the whole
circuit stops. In a parallel circuit, each component has its own path, so if one part fails, the
other components continue to work.

15. Insulators like plastic and rubber are used to protect us from electric shocks and prevent
electricity from flowing outside the wires, which could cause accidents or fires.

16. In a parallel circuit, if one bulb goes out, the others will continue to work. This is not the case
in a series circuit, where if one bulb fails, the whole circuit stops working.

Part D: Diagram

 Open Circuit Diagram:

A battery, a gap between two wires (no connection), showing that electricity cannot flow.

 Series Circuit Diagram:

A battery, two bulbs connected in a single loop, with wires showing that electricity flows through
both bulbs in sequence.

 Parallel Circuit Diagram:

A battery, two bulbs, each connected to the battery with its own path (branches) showing that
electricity flows through both bulbs independently.