Intro To Forces Question Preview (ID: 33398)


Introduction To Forces And Simple Machines. TEACHERS: click here for quick copy question ID numbers.

Which of the following makes work easier?
a) machines
b) air resistance
c) friction
d) gravity

What is the force that pulls objects to the earth?
a) friction
b) gravity
c) air pressure
d) motion

What are the two parts of a lever?
a) wheel and axle
b) block and tackle
c) bar and fulcrum
d) pin and needle

What is the load?
a) the force used to make a simple machine work
b) the force pulling objects to earth
c) the force resisting the movement of objects against each other
d) the weight of an object being moved

What is the force applied to make a simple machine do work?
a) effort
b) load
c) fulcrum
d) pulley

Which simple machine has a grooved wheel and a rope?
a) pulley
b) wheel and axle
c) lever
d) screw

Which of the following is a screw?
a) spiral staircase
b) light bulb
c) mountain road
d) all of the answers are right

Which simple machine would you use to help load a box into a truck?
a) wedge
b) screw
c) inclined plane
d) lever

If the mass of an object increases, the force must do what to move it?
a) increase
b) decrease
c) stay the same
d) it doesn't matter as long as there is some kind of force

A block and tackle allows you to use what kind of force when lifting an object?
a) more
b) less
c) the same
d) equal amounts

Wedges are used to do what?
a) lift heavy objects
b) pry things open
c) force objects apart
d) roll things along

What makes up a wedge?
a) two or more levers
b) two or more inclined planes
c) three or four screws
d) two wheels and axles

The amount of work you do depends on how much of what you use to move an object?
a) air
b) time
c) load
d) force

What simple machine rotates or turns on a point (fulcrum)?
a) wheel and axle
b) lever
c) pulley
d) wedge

What is the thread on a screw?
a) an inclined plane
b) a wedge
c) a lever
d) a pulley

A ramp, or a hilly, sloped surface is also known as
a) a pulley
b) a wheel and axle
c) an inclined plane
d) a screw

The amount of effort on a lever depends on the locations of the what between the effort and fulcrum?
a) load
b) weight
c) force
d) distance

Which of the following is a pulley?
a) knife
b) scissors
c) flagpole
d) car

What two forces pull a ball down to the earth?
a) air and wind
b) gravity and motion
c) friction and gravity
d) power and fire

What simple machine is a door knob?
a) wheel and axle
b) lever
c) inclined plane
d) pulley

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