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Worksheetsgrade 6 , con 3 , lesson 3
Total questions: 10
Worksheet time: 5mins
Mechanical energy is converted into......in the generator
light
sound
thermal
electric energy
Generators are used in
building houses and heating water.
lighting houses and operating electric devices.
producing sound energy
generating thermal energy.
The flow of electric charges along a closed path causes
electric circuit.
light energy.
electric current.
sound energy.
…....... are used to spin the magnet in the generator to produce electricity
Water and winds
Light and sound
Electricity and sound
Sound and heat
Magnets are used in generators and
turbines - sound.
switches - sound.
lamps - heat.
turbines - electricity.
The source of electricity in any electric circuit may be
a metal wire.
a switch.
a battery.
an electric lamp.
The electric circuit contains.....which is responsible for opening and closing
a battery
a switch
a lamp
a heater
When the switch is turned off, it...........the circuit, so the electric current
open - will flow through.
close - will pass through.
open - will not flow through.
close - will not pass through.
All the following materials are considered as electric conductors, except
copper.
water.
rubber.
iron.
The internal switch on a ....... can be used in the refrigerator to adjust its temperature.
battery
Thermostat
Light bulb
wall socket
