Science
Learn the following for review on 22/01/2017
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Simple machines
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Definition
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Function
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Examples
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Lever
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A stiff bar that rests on a
support is called fulcrum
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To lift and move load
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Nutcracker, seesaw, opener,
elbow
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Pulley
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It is wheel with a rope around
it
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It helps to move things up,
down or across easily
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Curtain rod, crane, fishing
net
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Screw
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An inclined plane that winds
around itself
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Helps to connect two objects
together
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Screw, bolt, drill, jar-lid
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Inclined plane
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An inclined plane is a flat
surface that is higher on one end
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To move things easily up and
down
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Slide, stairs, ramp, escalator
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Wheel and axle
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Wheel helps people get around
faster. Axles help the wheel to turn.
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To move loads
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Car, wagon, bike, pencil
sharpener
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It is used to push two objects
apart.
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To cut, pull or make the
objects apart
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Knife, axe, nail, front of
boat, scissor
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Hindi
Learn question no. 1 ‘Tick the correct answer’ of L-14
given on page no.87 of the textbook for a review on 22.01.17, Sunday.
