Simple Machines
Simple Machines 2
Science Concepts
Science Concepts 2
Summary
100
A kind of wheel with teeth
Gears
100
a simple machine used to cut or split something
wedge
100
A push or pull that can move an object is a
force
100
A small force applied over a long distance is an example of
tradeoff
100
something done when a force moves and object a distance
work
200
a flat surface with one end higher than the other
inclined plane
200
a tool with few or no moving parts that helps people do work is a
simple machine
200
The force that makes a rolling ball slow down and stop is
friction
200
A lubricant is used to
reduce friction
200
With a simple machine you use less force, but over a
longer distance
300
a straight bar that turns on a point
lever
300
the only simple machine that does not move
inclined plane
300
A faucet handle is an example of a
second-class lever
300
When a wedge is pushed down between objects, the objects _______
move apart
300
Name two examples of lubricants.
soap, oil, powder, lotion, etc
400
a simple machine made of a wheel with a groove and a rope
pulley
400
a screw with more threads will be easier or harder to drive?
easier but it will take longer
400
You push on a heavy box but the box does not move. How much work have you done?
No work, to do work you must have an object, apply a force and the object must move
400
A measure of how far an object moves
distance
400
Name a simple machine that changes the direction of a force.
lever, wedge, fixed pulley, and screw
500
an inclined plane wrapped around a center post
screw
500
When you have 3 gears and the handle is in the first gear on the left, which gear will turn the same way as gear number one?
Gear 3
500
You push down on one end of a lever to lift ______ at the other end.
load
500
A tool that measures force (not push-pull meter)
spring scale
500
Describe the ways that ancient Egyptians may have moved heavy stones to build pyramids.
inclined planes, wheel and axles
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