Simple Machines: Question Preview (ID: 29776)


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What is a simple machine?
a) A machine that has few or no moving parts. b) A machine that has lots of moving parts. c) Both A and B d) none of the above
How are force, distance, and work related?
a) the less the distance, the more the force to move it = less work b) the bigger the distance, the more the force to move it = less work c) the bigger the distance, the less the force to move it = more work d) the bigger the distance, the greater the force to move it = more work
How do we use a wedge?
a) to hold things together b) to raise or lower heavy objects c) to split things apart d) to reduce the force needed to move something
How do we use a pulley?
a) to split things apart b) to lift heavy objects c) to hold two things together d) to reduce friction to make it easier to move
What is a complex machine?
a) a machine that has lots of wires b) a machine that combines several simple machines and makes dangerous work even more dangerous c) a machine that combines several simple machines and makes dangerous work/tasks easier d) a machine that has wheels
How do we use a screw?
a) to reduce the force needed to move something b) to split something apart c) to hold things together d) to reduce friction and make it easier to move something
Whenever you push, pull, turn, or lift an object, you use ----.
a) work b) force c) oxygen d) distance
What is a machine?
a) something that uses energy to work b) something that uses gas to go c) something that uses fuel d) nothing
What is needed to make something move?
a) distance b) force c) friction d) nails
An ax and a knife are examples of ------.
a) wedges b) screws c) gears d) wheels and axles
What is the main reason people use machines?
a) Machines make work easier and faster. b) Machines make work harder and longer. c) Machines make work easier and longer. d) Machines make work harder and faster.
How do we use inclined planes?
a) to reduce the force needed to move something b) to lift heavy things c) to split things apart d) to raise or lower heavy objects
How do we use a wheel and axle?
a) to lift heavy things b) to reduce friction and make it easier to move something c) to hold two things together d) to split things apart
What kind of a simple machine is a wheelchair ramp?
a) screw b) pulley c) fulcrum d) inclined plane
A see saw is an example of a ---.
a) lever b) pulley c) screw d) gear
Which two things determine how much work it takes to do something?
a) friction and force b) energy and distance c) force and distance d) fulcrum and lever
What kind of a simple machine would you use to attach a basketball hoop onto a wooden building?
a) screw b) lever c) inclined plane d) wheel and axle
What does a lever rest on a point called the ----.
a) fulcrum b) pivot c) pulley d) inclined plane
How do we use a gear?
a) to lift heavy things b) to reduce the force needed to move something c) to split two things d) to hold two things together
How do we use a lever?
a) to lift heavy things b) to hold two things together c) to reduce friction and make it easier to move somthing d) to split to things apart
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