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Eighth Grade (Grade 8) Magnetism and Electricity Questions

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Grade 8 Magnetism and Electricity
Which statement is true about this symbol when used in a circuit drawing?
Switch Closed
  1. The switch is open and electricity can flow through the circuit.
  2. The switch is open and electricity cannot flow through the circuit.
  3. The switch is closed and electricity can flow through the circuit.
  4. The switch is closed and electricity cannot flow through the circuit.
Grade 8 Magnetism and Electricity
What does the A in the circle best represent in the circuit schematic?
Schematic of a Circuit
  1. a device that lights up in the circuit
  2. a device that resists electrical current
  3. a device that opens or closes the electrical circuit
  4. a device that measures the electric current of the circuit
Grade 8 Magnetism and Electricity
Which of the following results in a decrease of friction?
  1. applying more force when scrubbing a dirty pot
  2. oil added to a car engine to lubricate moving parts
  3. deep tread on snow tires to increase traction
  4. scrubbing food from a dish with the rougher side of the sponge
Grade 8 Magnetism and Electricity
The diagram represents a parallel circuit.
Resistors in Parallel
  1. True
  2. False
Grade 8 Magnetism and Electricity
Which statement is true about this symbol when used in a circuit drawing?
Switch Open
  1. The switch is open and electricity can flow through the circuit.
  2. The switch is open and electricity cannot flow through the circuit.
  3. The switch is closed and electricity can flow through the circuit.
  4. The switch is closed and electricity cannot flow through the circuit.
Grade 8 Magnetism and Electricity
The diagram represents a parallel circuit.
Series Circuit
  1. True
  2. False
Grade 8 Magnetism and Electricity
What would this symbol below represent in a circuit diagram?
Connecting Wire
  1. wire
  2. switch
  3. battery
  4. resistor
Grade 8 Magnetism and Electricity
What happens when you bring the south ends of two magnets together?
  1. nothing
  2. repeal
  3. attract
  4. non of the above
Grade 8 Magnetism and Electricity
Which statement is true about the circuit diagram?
Series Circuit
  1. It is in series and the current flows clockwise.
  2. It is in parallel and the current flows clockwise.
  3. It is in series and the current flows counterclockwise.
  4. It is in parallel and the current flows counterclockwise.
Grade 8 Magnetism and Electricity
This symbol would represent a single cell in a circuit diagram.
Single Cell
  1. True
  2. False
Grade 8 Magnetism and Electricity
The diagram represents a series circuit.
Series Circuit
  1. True
  2. False
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