Review: Engineering and Design Unit: Lesson 1

An engineer proposes a new chemical that could be sprayed from aircraft to slow the rate of burning in a forest fire. What is the next step the engineer is likely to take to develop this solution for fighting forest fires?

• Test a number of similar chemicals.
• Compare the effectiveness of the new chemical to the current chemical.
• Add the chemical to all aircraft spray tanks.
• Design a spray system for the chemical.

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NGSS.MS-ETS1-2

True or False: Modern life is dependent upon technology. Without engineered tools, scientists could not carry out research.

• True
• False

True or False: Engineers make use of knowledge gained by scientific investigations.

• True
• False

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___________________generally explore phenomena to develop explanations and engineers generally solve problems.

• Students
• Scientists
• Historians
• Engineers

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_______________ can be used to represent complex systems and their many interactions.

• Maps
• Math
• Models
• Documents

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Why do scientists and engineers often use a model of a system to predict the results of interactions, instead of studying the actual system?

• Models are harder than experiments.
• Models provide a way to focus on parts of the system and to study system interactions on a smaller scale.

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True or False Engineers develop or improve technologies to meet people’s needs and wants that change over time.

• True
• False

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__________________is the application of science and mathematics to solve real-life problems.

• Engineering
• Scientific Method
• Criteria

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_________________ is any tool, process, or system designed to solve a problem.

• Enginnering
• Criteria
• Technology
• Computers

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True or False: Engineers need to know how systems work to design solutions so they rely on scientific studies.

• True
• False

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