Developing and Testing Solutions: Lesson Quiz

Angela is designing a wind-up toy that uses elastic bands. She conducts an experiment to find which type of rubber band to use in her design. Her results show that the thicker and longer rubber bands would move the toy the farthest. She concludes that thicker and longer rubber bands should be included in her design. Which is true about her conclusion?

• It is not completely supported by the data and should be dismissed.

• It is partially supported by the data and should be revised based on new tests.

• It is partially supported by the data but still not useful in the design process.

• It is completely supported by the data and therefore useful in the design process.

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Students are testing steam quality. They are transporting sensitive equipment a long distance to the testing site at the stream. They have come up with a large list of criteria for transporting the equipment safely. How can they best evaluate which criteria are most important?

• select some criteria from the list randomly

• use a rating scale to identify the importance of each criterion

• select criteria based on which ones were thought of first

• ask their friends what they think the most important criteria are

Tags

NGSS.MS-ETS1-2

The goal of engineering is to develop solutions for human needs. A group of people test the same four pest control products using the same methods. They achieve the same results. Why might the testers disagree about which of the four pest control solutions is best?

• They might use the products in different ways.

• They might have had different outcomes with the products.

• They might use the products for different lengths of time.

• They might weigh risks and benefits of each solution differently.

Tags

NGSS.HS-ETS1-3

Melissa is designing a bridge that needs to withstand the weight of large transport trucks moving across the bridge. Which is the best way for her to find out if her design will support the moving trucks?

• build a prototype and use a toy truck to carry heavy weights across

• ask other bridge builders whether or not they think it will hold the trucks

• do some research online about the success of similar bridge designs

• survey truck drivers to see if they would drive their trucks over that design

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

William thinks the design of his go-cart is too heavy and needs to be lighter. He comes up with a number of solutions and evaluates the constraints and criteria. One of his main constraints that affected most of his solutions was cost. Which next step would be the best one for William to take in order to solve this problem?

• Make models for all the solutions and test them.

• Go back to the drawing board and start a new design.

• Try to raise money to build and test all the solutions.

• Choose a solution and make a model based on that choice.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Take your time. Give a good answer!

Jada’s class grows an organic garden as part of a project. Students grow their garden for two months but find the plants are growing slowly. Jada and her class review their plan for taking care of the plants and come up with many solutions to improve their plan. Instead of picking one of the solutions, they decide to combine parts of different solutions to make one new plan. Describe three benefits of this approach.

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Rachel finds that she gets distracted when she is trying to complete her homework. Explain how she could use these steps of the engineering design process to address the problem:

Conduct research.

Test the design.

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Jennifer is going on a camping trip at the beach with her family, and she needs to bring along clothes and other items. She has three choices for carrying her supplies: a medium-sized backpack, a suitcase, or a small beach bag. She has listed the following criteria for her choice:

easy to carry holds a lot of items comfortable for hiking easy to use on the beach

Assess how well each of Jennifer’s solutions meets the criteria of the problem.

Enter your answer in the space provided.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS MS Mod1 U2L2 Passage 1

Testing for Acids

Marissa is conducting an experiment in which she needs to test for acids in water. She is using a substance she believes will turn green when put into different acid solutions. She finds that sometimes the substance turns green, but other times it does not.

Marissa wants to use this substance in her experiments, but it must consistently turn green in the presence of an acid.

Which approach should she take to solve her problem?

Choose the correct answer.

Tags

NGSS.MS-ETS1-1