Design Process MCAS ETS 1.1-1.7

3.ETS.1.1 A software engineer designed a new version of a video game. The original version of the game and the new version are compared in the table. Select three design criteria the engineer most likely used in designing the new version of the game.

• must cost more to make than the original version
• must allow more players than the original version
• must take longer to design than the original version
• must have more levels of play than the original version
• must have more levels of difficulty than the original version

Tags

6.ETS.1.1

3.ETS.1.1 A dance teacher put up cubbies for students to store their backpacks. The teacher changed the setup of the cubbies, as shown below. What problem was the dance teacher most likely trying to solve by changing the setup of the cubbies?

• Some students did not have cubbies.
• Some students could not reach their cubbies.
• The cubbies were not large enough for the backpacks.
• The cubbies did not allow enough space for the dance floor.

Tags

6.ETS.1.1

During winter, a class of students in Massachusetts completed an investigation to determine how to make icy sidewalks safer. They tested four substances to see whether the substances could melt ice. The information the students gathered about each substance is shown in Table 1.

The students measured how long it took each substance to melt a different icy area on each of three days. All the icy areas the students tested were the same size. The data the students collected are shown in Table 2.

Sand made the icy areas less slippery, but it did not melt the ice. Some of the substances harmed the grass. The following spring, the grass was brown and unhealthy next to the areas where sodium chloride and calcium chloride had been tested. However, the grass was green and healthy next to the areas where urea and sand had been tested.

The students compared their results from using sodium chloride, calcium chloride, and urea to melt ice on the sidewalk.

The students decided that calcium chloride was the best substance to apply to the ice. Select the two criteria that were most important to the students when they evaluated the substances and decided calcium chloride was the best option.

• A cost of substance

• time for ice to melt

• works at lowest temperature

• impact of substance on environment

Tags

6.ETS.1.1

6.MS-ETS1-1. A company is designing a new laptop computer. The computer must not exceed a certain weight. Which of the following is the most likely reason to have a weight restriction for the computer?

• to make it easier to test the prototype
• to reduce the cost of making the computer
• to make it easier to transport the computer
• to reduce the cost of building the prototype

Tags

6.ETS.1.1

During winter, a class of students in Massachusetts completed an investigation to determine how to make icy sidewalks safer. They tested four substances to see whether the substances could melt ice. The information the students gathered about each substance is shown in Table 1.

The students measured how long it took each substance to melt a different icy area on each of three days. All the icy areas the students tested were the same size. The data the students collected are shown in Table 2.

Sand made the icy areas less slippery, but it did not melt the ice. Some of the substances harmed the grass. The following spring, the grass was brown and unhealthy next to the areas where sodium chloride and calcium chloride had been tested. However, the grass was green and healthy next to the areas where urea and sand had been tested.

The students compared their results from using sodium chloride, calcium chloride, and urea to melt ice on the sidewalk.

The students want to spread one of the substances on a sidewalk near a garden the following winter. The substance needs to meet these criteria:

• melts ice at –2°C

• does not harm plants

Which substance should the students choose based on these criteria?

• sodium chloride

• calcium chloride

• Urea

• Sand

Tags

7.ETS.1.2

7.ETS.1.2 Which of the following is the main advantage of solution 2 compared to solution 1?

• The rain garden would take less time to make.
• The rain garden would be less expensive to maintain.
• The rain garden would help prevent erosion of the area.
• The rain garden would move more water across the ground.

Tags

7.ETS.1.2

4.ETS.1.3 An engineer is testing different types of pervious (water can go through) concrete to use in a new parking area. Pervious concrete is a special kind of concrete that can help reduce flooding by allowing rainwater to pass through and soak into the ground. Which of the following should the engineer measure to see how well a type of pervious concrete will reduce flooding?

• the weight of 10 cubic meters of the concrete
• the strength of a 15-centimeter layer of the concrete
• the amount of water needed to mix a cubic meter of the concrete
• the number of liters of water per minute that can move through the concrete

Tags

7.MS-ETS1-4

4ETS1-3 The owners of a restaurant with a wooden floor want chairs that slide but do not scratch the floor. The owners test different materials on the bottom of the chair legs. They rate the materials on how well the chairs slide and whether or not they scratch the floor. The results are shown in the table. Which material will best allow the chairs to slide without scratching the floor?

• W
• X
• Y
• Z

Tags

7.MS-ETS1-4

7.MS-ETS1-4. A medical company designs a new device to measure a person’s vital signs, including heart rate and blood pressure. During the design process, the company produces several prototypes. During which of the following steps is it most appropriate to use a prototype?

• distributing information about the device
• researching how vital signs are measured
• testing whether the device works properly
• determining which vital signs are most important

Tags

7.MS-ETS1-4

7.ETS.1.4 A fifth-grade class is designing a small fan that will be easy to carry. The students need to select the following parts for the fan: a motor a power supply a switch fan blades What should the students do to test the amount of airflow the fan will produce?

• create a video
• draw a sketch
• construct a prototype
• complete a graphic organizer

Tags

7.MS-ETS1-4