Engineering Design and Scientific Investigation Assessment

What is the primary purpose of a controlled experiment?

• To create random results

• To test multiple variables at once

• To isolate and test one variable while keeping other factors constant

• To skip the scientific method entirely

In an experiment, what is a dependent variable?

• A variable that remains constant

• The variable being measured or observed as a result of changes

• The variable the scientist chooses to change

• A random factor in the experiment

Which of these best describes an independent variable?

• The variable that is being measured

• A variable that stays the same

• The outcome of the experiment

• The variable that the scientist intentionally changes

What is a constraint in engineering design?

• A limitation or restriction that affects the design

• A successful outcome of the project

• The first step in building a prototype

• The final testing phase

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What is the purpose of creating a prototype?

• To skip the planning phase

• To test and evaluate a design before final production

• To immediately solve all problems

• To avoid making changes to the design

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What is the main role of an engineer?

• To conduct medical research

• To solve practical problems through design and innovation

• To teach mathematics

• To write scientific papers

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How is efficiency best defined in engineering?

• Using the most expensive materials

• Taking the longest time possible

• Achieving the desired result with the least waste of resources

What is the purpose of the y-axis on a graph?

• To show time passing

• To represent the horizontal line

• To show the vertical measurement or dependent variable

• To label the title

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What role does brainstorming play in engineering design?

• It's the final step in the process

• It generates multiple possible solutions to a problem

• It's only used after building a prototype

• It's not part of engineering design

What is a reference point in motion studies?

• A fixed location from which to measure movement

• The speed of an object

• The final destination

• The starting time