6.MS-ETS2-1 and 2-2 Properties of Materials

6.ETS.2.1

The arrow in the picture points to a part of the Golden Gate Bridge made of concrete.

Concrete is ______________,

• very heavy
• low in density
• high in strenght

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6.ETS.2.1

6.ETS.2.1 so this part of the bridge can ___________.

• float on top of the water
• move back and forth in the wind
• support a large amount of weight

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6.ETS.2.1

6.ETS.2.1 A scientist wants to collect several bird eggs on an island. She needs a case that will protect the eggs she collects. Which of the following cases would best protect the eggs?

• a hard metal case with flexible foam lining
• a flexible metal case with smooth plastic lining
• a strong wooden case with lightweight plastic lining
• a lightweight wooden case with strong aluminum lining

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6.ETS.2.1

6.ETS.2.1 An anemometer measures wind speed. The diagram below shows an anemometer that a student built. Which of the following statements best explains why the student used a metal pin to hold the straws in place?

• The pin is thin and strong.
• The pin can be magnetized.
• The pin is flexible and shiny.
• The pin can conduct heat energy.

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6.ETS.2.1

6.ETS.2.2 The students in a class plan to build a small catapult to launch marbles. They want to test the properties of different materials so they can choose the best materials to build the catapult. Which two properties of the materials should they test in order to build a catapult that launches marbles the greatest distance?

• strength and flexibility
• hardness and flexibility
• strength and malleability
• hardness and malleability

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6.ETS.2.2

The arrow in the picture points to a part of the Golden Gate Bridge made of concrete. 

Select from the drop-down menus to explain why the engineers used concrete to build this part of the bridge.

Concrete is​ (a)   , so this part of the bridge can ​ (b)  

• low in density
• high in strength
• support a large amount of weight
• very heavy
• float on top of the water
• move back and forth in the wind

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6.ETS.2.1