Light & Electricity Revision

Which of these are not light sources?

• Stars, Fire & Lightning
• Torch & Lamp 
• Wood and Plastic

Wood and plastic are examples of:

• Electrical conductors
• Electrical insulators
• Switches
• Bulbs

Copper is an Electrical conductor, this means:

• It blocks electricity from passing through it.
• Bulbs can rest on top of it
• Electrical currents can pass through it
• It creates electricity.

Which is the correct set of components for the diagram in the picture?

• Battery, wires, switch & bulb
• Battery, switch, motor & wires 
• Battery, switch & buzzer
• Battery, wires, switch & buzzer

What is the problem with this circuit?

• There is a gap in the circuit so electricity cannot pass.
• Wires are too short
• Battery is not working
• Bulb is facing the wrong way 

What does this symbol represent?

• Motor
• Bulb
• Cell
• Buzzer

What does this symbol represent?

• Bulb
• Wire
• Switch
• Buzzer

What happens to a simple circuit when a SECOND bulb is added?

• Both bulbs get brighter
• One bulb is brighter than the other
• Both bulbs become duller
• The buzzer starts.

What tool do you use to measure the voltage in a circuit?

• Battery
• Bulb
• Ammeter
• Themometer

In a simple circuit with a battery and a buzzer, how can you make the buzzer LOUDER?

• Use more wires
• Add a switch into the circuit.
• Add another buzzer
• Use two cells instead of one