Simple Machines Question Preview (ID: 20640)
Simple Machine Review.
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Two or more simple machines make up a ______________ machine.
a) simple
b) compound
c) complex
d)
Wheels with teeth are called ____________________.
a) wheel and axle
b) wedge
c) gears
d)
A flat, slanted surface can be used as an _________________
a) wedge
b) inclined plane
c) lever
d)
An inclined plane twisted into a spiral is called a _____________.
a) lever
b) pulley
c) screw
d)
A wheel and bar that passes through the center of the wheel are the two parts of a ________.
a) gear
b) wheel and axle
c) pulley
d)
Anything that helps you do work or make work easier is called a ________.
a) machine
b) fulcrum
c) effort force
d)
When the pulley wheel is not attached to some fixed objects so that it moves with the force your apply, it is a ______
a) fixed pulley
b) movable and fixed pulley
c) movable
d)
Levers are classified into three groups depending on where the _______ is located.
a) effort force
b) load
c) fulcrum
d)
Many simple machines, such as a sharp-edged pieces of stone, are often called _______.
a) levers
b) tools
c) compound
d)
A bar or plank and a fixed point, called a fulcrum are the two parts of a _________.
a) wedge
b) screw
c) lever
d)
Two inclined planes put back to back form a _________________.
a) wedge
b) screw
c) inclined plane
d)
When the pulley wheel is attached to something so that it cannot change position it is called a _____________________,
a) fixed pulley
b) movable pulley
c) inclined plane
d)
The object being moved by the lever is called the _________________.
a) fulcrum
b) effort force
c) load
d)
The measure of how much useful work a machine puts out compared to the work put into it is called its ________.
a) force
b) load
c) efficiency
d)
Machines that have few parts are called _______________.
a) simple
b) compound
c) complex
d)
The force you used to move something is called the __________.
a) load
b) effort force
c) fulcrum
d)
The more gears and moving parts a machine has, the _______ energy is lost to friction.
a) less
b) more
c) no
d)
Scissors are made up of two wedges that are arranged as two _______ class levers.
a) 1st
b) 2nd
c) 3rd
d)
The point where the blades are connected on scissors is the __________.
a) handles
b) blades
c) fulcrum
d)
Blinds have a _____________ that helps to raise and lower the blinds.
a) lever
b) screw
c) pulley
d)
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