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Worksheets3RD PERIODICAL TEST IN SCIENCE 3
Total questions: 40
Worksheet time: 1hrs 20mins
Which of these is not a source of natural light?
firefly
lamp
stars
sun
Safe or dangerous?
safe
dangerous
Tick the activities that are safe.
Plugging in the computer with wet hands.
Touching a power line that is down.
Putting batteries in your toy.
Playing on the computer when it is plugged in.
Tick the activities that are dangerous.
Using the fan on a hot night.
Using electricity near water.
Holding a battery in your hand.
Plugging too many things into mains electrical socket
What is electricity?
It's only light
It's heat.
It´s a form of energy.
It´s a lamp or a candle.
Tick the pictures that use electricity
Electricity is the source of ................
light
heat
Energy
Electricity is dangerous because it may cause...............
Electric shock
wires and cables
fever
One rule for using electricity is.....
It is OK to iron and use your phone.
Too many plugs at a time in one socket.
Touch electrical items with wet hands.
Never leave a plug near water.
Safe or dangerous?
Safe
dangerous
Safe or dangerous?
safe
dangerous
Energy that is made by moving air
Solar
Wind
Oil
Coal
Energy that comes from the sun
Wind
Solar
Renewable energy
Efficient
Energy that can be replenished at the same rate as it is used
Natural Gas
Alternative Energy
Renewable Energy
Nonrenewable Energy
A flammable liquid made from organic matter buried under layers of sediments for millions of years.
Natural Gas
Coal
Oil
Solar
Energy that cannot be replaced in our lifetime
Nonrenewable Energy
Renewable Energy
Geothermal
Alternative Energy
The following are the uses of water to human and animal EXCEPT
to keep them hydrated
digest food
move nutrients and oxygen in their body
to get them vaccinated
Which thing is powered by electricity to cool things down?
Which things is powered by electricity to heat things up?
Which thing is powered by electricity to power a motor?
It is a rapid back and forth movement.
Noise
Sound
Vibration
Music
_____ is produced by irregular vibrations without distinguishing rhythm.
Music
Noise
Vibrations
Sound
The production of unwanted and disturbing sounds creates _______.
Gravity
Force
Noise Pollution
Irritation
Which of the following objects can a magnet attract?
book
iron nail
paper
pencil
What can force change in a moving object?
balance
color
direction
reaction
Which of these is not a source of natural light?
firefly
lamp
stars
sun
Which is not true about light?
Light can burn objects
Light helps us see the world
Most light comes from the sun
Light can be produced by burning
Why are we able to see the moon?
It gives off heat
It gives off energy
It reflects light from Earth
It reflects light from the sun
Which is a list of renewable sources of energy?
water, solar, wind
coal, geothermal, wind
natural gas, wind, biomass
biomass, geothermal, water
Which of the following does not give the importance of light?
used to warn ships
used for communication
used by plants for making food
helps control the flow of traffic
Why do people use heat at home?
to cook food
to take pictures
to brighten the room
to charge mobile phones
Use pot holders on hot pans.
True
Maybe
False
None of the above
Read in the dark to save energy.
False
True
Maybe
None of the above
Keep electrical equipment away from water.
True
False
Maybe
None of the above
Connect several appliances into one extension cord.
True
False
Maybe
None of the above
Which action changes the shape of an object?
molding a clay
painting a wall
rolling a marble
writing a paper
What are the two poles of a magent?
east pole and west pole
north pole and east pole
west pole and south pole
north pole and south pole
What are the forces that cause objects to move?
What is the difference between natural and artificial light?
Give two electrical devices and describes the use of each.
