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WorksheetsSCIENCE 4
Total questions: 55
Worksheet time: 31mins
What is work?
The use of a force to move an object across a distance.
Solving a math problem.
A simple machine.
When you don't move an object.
Read and choose the correct simple machine.
Is made of a round object, a wheel, attached to a post, called an axle.
Wheel and axle
Wedge
Lever
Inclined plane
Read and choose the correct simple machine.
Is a simple machine made from two slanted sides that end in a sharp edge.
Wheel and axle
Wedge
Lever
Inclined plane
Read and choose the correct simple machine.
Is a stiff bar that rests on a support.
Wheel and axle
Wedge
Lever
Inclined plane
Read and choose the correct simple machine.
... or a ramp, is a slanted surface.
Wheel and axle
Wedge
Lever
Inclined plane
Read and choose the correct simple machine.
Can make work easier in two ways. It can decrease the amount of force needed to move an object. It can also change the direction that the force is applied.
pulley
screw
Lever
Inclined plane
Read and choose the correct simple machine.
Is an inclined plane wrapped around a center post.
pulley
screw
Lever
Inclined plane
What is the design process?
Is a step-by-step method used to solve a problem.
A force to move an object.
A solution is an answer to a problem.
An engineer is any person who designs new technology.
Which is the first step in the design process?
Identify the problem
Do research
Develop possible solutions
Choose one solution
What is an engineer?
A person who designs new technologies.
A simple machine.
A wheel and axle.
The use of a force to move an object.
What is a complex machine?
These are made up of two or more simple machines that work together.
The force to move an object.
A person who designs new technologies.
An inclined plane.
Germination is _________________________________.
when a seed starts to grow
when an egg and pollen join together
when pollen moves stamen to stigma
when a plant makes its own food.
A seed needs __________, __________ and a __________ to germinate.
soil, water, air
suitable temperature, water, sunlight
air, water, suitable temperature
water, air, sunlight
What do you call to the process where plants make their own food?
Germinate
Nutrients
Photosynthesis
Plant Life
The part of a plant that grows into a new plant.
food store
roots
seed
flower
Precipitation means...
water vapor cooling to form clouds
water running downhill
water falling from the sky
water heating up and rising as gas
Condensation means...
water vapor cooling to form clouds
water running downhill
water falling from the sky
water heating up and rising as gas
Evaporation means...
water vapor cooling to form clouds
water running downhill
water falling from the sky
water heating up and rising as gas
During condensation water changes from ....
solid ice to liquid water
liquid water to water vapor (gas)
water vapor (gas) to liquid water drops
Water falls from the sky in...
evaporation
condensation
precipitation
Which planet is the eighth (8th) from the Sun?
_____________ are minor plants
asteroid
meteors
comet
___________ are the glowing spheres of gas and dust
comet
asteroid
Huge chunk of stone and metal leftover from the creation of solar system
asteroid
comet
You would weigh less on the moon.
TRUE
FALSE
Male sharks have thicker skin than females.
YES
NO
The Eiffel Tower can be 15 cm shorter during the summer.
RIGHT
WRONG
20% of Earth’s oxygen is produced by the Amazon rainforest.
TRUE
FALSE
A teaspoonful of neutron star would weigh 6 billion tons.
YES
NO
Polar bears are nearly undetectable by infrared cameras.
RIGHT
WRONG
The Earth is small magnet.
TRUE
FALSE
Grasshoppers have ears in their bellies.
RIGHT
WRONG
Octopuses have three hearts, three brains, and blue blood
TRUE
FALSE
Stomach acid is strong enough to dissolve stainless steel.
TRUE
FALSE
Living things need non-living things like food, water, air to survive on Earth. But the human activities have been largely responsible for increased pollution of all natural resources like water, air, weather etc. Can you mention a few types of pollution caused by human beings?
Air pollution
Water pollution
Land pollution
All of option 1, 2, 3
A student takes a balloon and fills it with air. What he will notice?
He will notice that mass of the balloon remains the same.
He will notice that mass of the balloon is decreased.
He will notice that mass of the balloon is decreased by half of the initial mass of the balloon.
He will notice that the mass of the balloon is increased.
Water helps to regulate body temperature.
True
False
COVID-19 is an infectious disease caused by a newly discovered ____________.
Virus
Fungi
Mushroom
Bacteria
Which is the largest organ in the human body.
Lungs
Skin
Brain
Kidneys
How planets are there in our solar system?
6
7
8
4
Eating a balanced diet and getting regular exercise are important for a healthy lifestyle. The following are the benefits we can gain:
Prevent excessive weight gain
Maintain mental health
Improves sleep
All the above
People who have a habit of using correct posture are less likely to experience related back and neck pain. It also improves ______ flow in our body.
Liquid
Water
Air
Blood
Why are plants important ?
Plants absorb carbondioxide and give us oxygen
It gives us food
It helps in making our shelter
All the above.
This is the largest living animal on Earth.
Elelphant
Blue Whale
Humans
None of the above
