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WorksheetsGlencoe Science Simple Machines test
Total questions: 16
Worksheet time: 8mins
Device that makes work easier but doesn't actually reduce the amount of work being done
simple machine
fixed machine
binary machine
non-beneficiary machine
bar that turns or pivots on a fixed point:
fulcrum
lever
axle
gear
The radius of the effort arm is larger than the radius of the resistance arm:
lever
pulley
wheel and axle
ragnarok
May or may not change the amount of force or direction
watt
lever
power
pulley
Ramp that reduces effort by increasing distance:
wedge
inclined plane
screw
pulley
inclined plane wound around a post
axle
wedge
nail
screw
Changes downward force to an outward force:
screw
wedge
lever
axle
Tells you how helpful a machine is:
Mechanical Advantage
Power
Watt
Newton
Rate that you do work:
watt
newton
mechanical advantage
power
Equal to one joule per second
watt
power
newton
joule
Most simple machines work by ______________________.
increasing the effort fore over a larger distance
decreasing the effort fore over a larger distance
increasing the effort fore over a shorter distance
decreasing the effort fore over a shorter distance
You do 300 J of work on one end of a 5 m lever. How much work is done on the other end?
300 J
1500 J
60 J
900 J
The use of a machine can change __________.
force
distance over which force acts
work
both force and the distance which force acts.
The increased effect of effort force is measured by ____________.
mechanical advantage
power
efficiency
resistance force
You find yourself in a situation where you cannot perform a task with only one simple machine. What might you do?
cOmBiNe ThEm ToGeThEr InTo A cOmPlEx MaChInE
give up
go ask mommy
the wrong answer
Why do people only use machines?
they increase the work needed
they reduce the amount of force needed to perform a task
technology, dude.
we are lazy (this is not the answer.)
