Part A
True/False
Indicate whether the statement is true or false.
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1.
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A can opener is a compound machine that is made from four simple
machines.
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2.
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Forestry machines that run on tracks have the same advantages as machines that
run on wheels.
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3.
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If you wanted to lift and move a box, you could use a pulley and an inclined
plane.
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4.
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Simple machines can be combined to make work easier.
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5.
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Compound machines are not used in British Columbia because they are too
big.
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Part B
Complete the Sentences
Use the following words to complete the
sentences.
pulley
wedge wheel and axle screw
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6.
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A propeller combines the advantages of a wheel and axle and a
_____________.
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7.
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The arm on a backhoe combines the advantages of a lever, a wedge, and a
____________.
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8.
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A conveyor belt combines the advantages of a moving inclined plane and a
___________.
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9.
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A paddle combines the advantages of a lever and a ______________.
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Part C
Multiple Choice
Identify the letter of the choice that best completes the
statement or answers the question.
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10.
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Machines that are used for logging in British Columbia today
a. | use human and animal power | b. | combine the advantages of simple
machines | c. | are simple machines |
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11.
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When you combine the advantages of a lever with a wedge, you can
a. | move an object across the ground | b. | lift an object | c. | hold an object
together |
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Part D
Name the Simple Machines
Name the simple machines, and give the number of each, in the following
compound machines.
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12.
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scissors
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13.
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shovel
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Part E
Answer the Question
Use sentences to answer the question.
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14.
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Explain how the Nisga’a fish wheel works and why it is still being used
today.
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