Cycle 4 EDP Review

  When following the engineering design process, in which order do the steps occur?   

• clockwise

• counter-clockwise

• in any order

• both clockwise and counter-clockwise

  Joven and his team have been chosen to build a wind turbine at a local mountain. The turbine needs to generate electrical energy and withstand the harsh winter alpine environment. Joven and his team have done their research on the problem. What would be the next step?   

• create a prototype of the wind turbine

• develop possible solution(s) for the turbine

• test the wind turbine on the mountain

• redesign a new solution for the turbine

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Directions: Read the passage, then answer the questions that follow.                                                                                Combining Materials Soundproofing  Data                                         

After the first tests, Ena’s parents specified that they would like for the loudness of the band immediately outside the garage to be at least 70% lower than the loudness inside the garage. Ena conducted experiments on combinations of materials, as shown in the graph. Select all that apply.

• shipping blanket and foam rubber

• cardboard (single layer)

• shipping blanket and plastic foam

• plastic foam (single layer)

• two shipping blankets

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Several prototypes were tested for a weather-resistant outdoor blanket. The designs used the same fabric in different thicknesses, but none were able to stop water leakage for more than four minutes. The prototypes met all of the other criteria, including cost, size, and style. What should the designers do next to produce the best weather-resistant blanket?

• Remove the criterion for the blanket to be weather resistant.

• Reset the criterion to have the blanket be weather resistant for up to four minutes.

• Use the same fabric, but make the blanket even thicker, and test the new prototype.

• Test the design using an alternative type of fabric that deflects water, though the cost may have to be adjusted.

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  Students have a box of ice pops to take to their ball game to sell on a hot day. They know they need a device to keep the ice pops from melting for 3 hours. They have a $15 budget. Which step of the engineering design process does this show? 

• identify a problem

• test and evaluate

• redesign

• develop possible solutions

Tags

NGSS.MS-ETS1-1

A lawn and garden company is developing new battery-powered string lights to use outside. The company would like the lights to be at least 50 feet long, have a battery life of 70 hours or more and cost less than $4.00 to manufacture. The top four design solutions are shown in the table.

Based on the results, what tradeoff might need to be made in order to meet the cost constraint?

• The safety guidelines should be ignored.

• The battery life requirement should be lowered.

• The company must be willing to increase the cost.

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An engineer is developing a portable water filter to help people who do not have access to clean water. The engineer has done extensive research, developed a model to identify criteria and constraints, and then built a prototype of the water filter design. What should the engineer do next? Circle the letter of the correct answer.

• Improve the prototype to look more appealing, and then produce additional prototypes that can be sold

• Study samples of water from different locations, and then identify the materials that the prototype should be able to filter out

• Study the materials in water that pass through the prototype, and then modify the prototype until the desired results are achieved

• Construct a second prototype that uses different materials, and then construct a third prototype using materials that differ from the first two

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An engineer is designing a new type of bracket to hold beams together in buildings. The goal of the design is to develop a bracket that is stronger than brackets currently used and also more flexible to help buildings withstand earthquakes.

How might the engineer test the design? Circle the letter of the correct answer.

• A. compare drawings of the new bracket with other brackets currently used in building construction

• B. make a model of a building using models of the brackets and observe what happens when tested by shaking

• C. create a graph that relates the damage cost to buildings with current brackets from earthquakes of different strengths

• D. draw a diagram that shows how earthquakes start under Earth’s surface and how the shaking affects brackets in buildings

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How is brainstorming used?

• to determine background knowledge about the problem

• to test which ideas will work and which will not

• to identify possible solutions that might solve the problem

• to make judgments about which solutions are most beneficial

The criteria for a new tablet are that the tablet should include a front and rear camera, the battery should last at least 8 hours, and the tablet should have at least 8 gigabytes of storage. The new design has a constraint that it must cost less than $100 to purchase. The table shows information about four competing designs.

Which Design meets all the criteria/constraints?

• Design 1

• Design 2

• Design 3

• design 4

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