Instructions
1) You do not need to type in your name in the space in the top-left area
above. The results of this study guide will not be sent to your teacher.
2) Carefully read each
question and all the answer choices.
3) Select the correct letter from the drop-down feature to
the left of each question.
4) When you are finished, click the “Check Your
Work” button in the bottom-left corner of the page.
5) The software will grade your work,
and then it will show you the results. Note that the correct answer will be displayed beneath the
questions.
6) Keep doing the study guide over until you earn a 100 on it.
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1.
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You are frustrated that your cell phone battery does not seem to last very long.
So you hire a team of electrical engineers to design a new type of cell phone battery. To make this
battery last longer, they must devise a way to reduce the amount of electrical current draining the
battery’s charge. Which tool would they most likey use to measure the electrical
current?a. | electron microscope | b. | pH Indicator | c. | ammeter |
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2.
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A bottle company discovered that caps were being applied with too much force.
This caused many bottles to break. Engineers adjusted the capping device so it applies less force to
the caps.
Which steps should the engineers take before the adjustment is considered
successful?
a. | replace the bottle caps with different caps that cover a larger bottle
opening | b. | inspect bottles that have passed through the capping device after the
adjustment | c. | compare their capping machine to similar machine in other
factories |
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3.
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An engineering company is testing a new weather-forecasting program.
Which procedure would best verify that the program is making accurate predictions?
a. | using the program to verify events not related to weather | b. | using the program to
verify past weather-related events | c. | comparing the predictions of the program to the
actual weather |
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4.
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A student built an electric generator prototype. The generator was designed to
give power to electrical devices.
How can the student best test the strength of the
generator?
a. | place a magnet on a spring scale and record the force of the magnetic
field | b. | place the generator on an electronic balance, and record its mass in
kilograms | c. | connect the generator to a circuit that contains appliances and then observe if the
appliances work |
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5.
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A student built a prototype of an electromagnet. The
electromagnet was designed to produce a strong magnetic field.
How can the student best
test the strength of the electromagnet?
a. | connect the electromagnet to a simple circuit that
contains a battery and light bulb, and then observe if the bulb glows | b. | place a thermometer near the electromagnet, and record changes in the air
temperature surrounding the electromagnet | c. | attach an iron bar
to a spring scale, place the iron bar near the electromagnet, and record the force reading on the
spring scale |
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6.
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Students are to build a model bridge using toothpicks and wood glue. The design
of the bridge must support a specific weight and measure 20 centimeters long. Which tools would best
help determine if the model bridge meets the design requirements?a. | hammer, string, and nails | b. | string, beaker, and water | c. | ruler, weights, and
string |
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7.
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A team of engineers are designing a new type of shark cage to enable marine
biologist to study the feeding behaviors of Great White sharks up close. The cage must be strong
enough to protect the diver inside, but it also can not be excessively heavy. What is one safe way that they
can test this prototype shark cage?a. | For their first test, they should place a Great White shark inside the cage to
determine if it can break out of the cage. | b. | For their first test, they should put a person
in the cage. Then they should lower the cage into a tank full of angry Great White
sharks. | c. | Place raw meat inside the cage in a bag, and then lower the cage into a tank of
hungry sharks to see if they can smash through the bars. |
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8.
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Students are building a prototype toy car and a circular race track using small
blocks of wood and long boards. The length of the race track must be exactly 6 meters, and the mass
of the car must be between 12 to 15 grams. Also, the toy car must travel around the track one
complete circuit in less than 10 seconds.
Which of the following tools would best
determine if the car and race track meets the design requirements?
a. | a meter stick, a triple-beam balance, and a stopwatch | b. | pliers, a saw, 6
meters of string, and a stopwatch | c. | a saw, a beaker, a triple-beam balance,
and a flask full of water |
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9.
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A company designed an electromagnetic tool that removes dents from metal plates.
The dented metal is placed between two magnets. An electric current is then supplied to the
electromagnets. The attraction between the two magnets forces the dented metal plate back into place.
How can engineers test to see if their design is successful?
a. | compare the type of metal plates treated by the company to those of other
companies | b. | compare the cost of operating the tool to other dent removal
tools | c. | compare the shape of the treated metal with the original shape of the
metal |
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10.
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Two engineering students at a nearby university are designing a new type of
bicycle tire for racing bikes. Their goal is to make this tire weigh at least 30% less than
pre-existing tires in order to enable cyclists to go faster. Which pair of tools would work best for testing this
bicycle tire prototype?a. | a triple-beam balance and a stopwatch | b. | A stopwatch and spring
scale | c. | A microscope and a Bunsen burner |
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