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WorksheetsRevision worksheet 6
Total questions: 40
Worksheet time: 29mins
Renewable energy is
Generated by natural resources and is renewable
man made
nonrenewable
not helpful to us in Texas
Nonrenewable energy is
man-made resources
cannot be replaced quickly
can be replaced in a short amount of time
never run out
Corn, wheat, and soybeans can be made into a substance called ethanol. In some places, ethanol is part of a mixture used to power cars and trucks. What type of alternative energy resource is ethanol?
Hydroelectric
Geothermal
Biomass
Solar
All of the following are considered renewable energy sources EXCEPT –
Wind
Coal
Biofuel
Solar
The flow of electric charge in a circuit is called ---------
Heat
Sound
Electric current
Magnetic
We must ---------- electricity by switching off electrical equipment when they are not in use .
Over load
Grab
Convert
Conserve
List two precautions we must take when using electricity .
Which of these devices use current electricity?
Tv
Computer
Both answers are correct
None of the answers.
Electricity is a type of --------- that gives items the power to work.
Force
Energy
These are ways we use electricity safely EXCEPT -----
Don't touch electricity with wet hands
Use electrical equipments with exposed wires
Don't put too much of plugs into one socket.
Make sure that electrical equipment have plastic or wooden handles.
One simple action we can do to conserve electricity is --------------------
Turn all the lights on
Open the refrigerator's door every time we want.
Keep the AC on when there is nobody in the room
Switch off all electrical equipment that are not in use
Electricity can harm us if we are not careful when using it. It means that we must use electricity -------------
Safely
Any time we want
All day
Carelessly
What needs to be done to this circuit so that the lamp lights up?
Close the switch
Add a power source and close the switch
Add another lamp
Add another lamp and a switch
What needs to be done to this circuit so that the lamp lights up?
Close the switch
Add a source and close the switch
Add another lamp
Add another lamp and a switch
Why electrical wiring usually are covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
Which switch or switches must be closed to make the lamps light?
Only switch 1
Only switch 1
Switches 1 and 2
Switches 1 , 2 and 3
Tammy makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then goes out. Why?
Too much electricity flows through the bulb's filament
Not enough electricity flows around the circuit
The batteries are flat
The batteries are not good
Peter has connected two bulbs across two batteries in a simple circuit. How can she make the bulbs dimmer?
Replace one of the batteries with a section of wire
Replace one of the bulbs with a section of wire
Replace one of the batteries with a cork
Replace the batteries for more wire
If lamp 1 is removed, what will happen to lamp 2?
It will get brighter
It will stay the same brightness
It will go out
Nothing will happen
Why is a bulb brighter when it is powered by two batteries rather than one?
Because the flow of electricity in the circuit is less
Because the flow of electricity in the circuit is the same
Because the flow of electricity in the circuit is greater
Because the flow of electricity will go backward
If lamp 2 is removed, what will happen to lamp 1?
It will stay lit
It will go out
It will get dimmer
It will disappear
Which of the following materials is an electrical conductor?
Silver spoon
Silver-colored plastic spoon
cooper spoon
wooden spoon
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
Electrical lights will not come on unless their electrical circuit is a --
parallel circuit
series circuit
closed circuit
open circuit
