Engineering in Middle Science

Which of the following best explains why the engineers used concrete to build this part of the bridge?

• Concrete is low in density so this part of the bridge can float on top of the water.

• Concrete is heavy so this part of the bridge can move back and forth in the wind.

• Concrete is low in density so this part of the bridge can move back and forth in the wind.

• Concrete is high in strength so this part of the bridge can support a large amount of weight.

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NGSS.MS-PS2-4

Which of the following describes the foundation of a building?

• It is a flat surface that people can walk on, but it does not help to support the building.

• It is a part that the entire building is built upon, and it keeps the building from sinking into the ground.

• It is a vertical wall that blocks access and visibility, but it provides structural support for the building.

• It is a cover that protects the building, and it shields anything inside from sunlight and precipitation.

Which of the following changes should the student include in the new model?

• Making the atoms bigger

• Making the atoms a different shape

• Making larger spaces between the atoms

• Making chemical bonds between the atoms

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NGSS.MS-PS1-1

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Which of the following is a primary function of a bridge in engineering?

• To provide a path for vehicles and pedestrians over obstacles.

• To generate electricity using water flow.

• To store water for agricultural use.

• To convert solar energy into electrical energy.

What is the main purpose of a dam in engineering?

• To block the flow of water and create a reservoir.

• To provide a habitat for fish and other aquatic life.

• To serve as a bridge for vehicles and pedestrians.

• To generate wind energy.

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NGSS.MS-ETS1-1

In engineering, what is the role of a lever?

• To lift or move loads with less effort.

• To measure temperature changes.

• To store electrical energy.

• To conduct electricity.

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NGSS.MS-PS2-1

Which material is commonly used in the construction of skyscrapers due to its strength and flexibility?

• Steel

• Wood

• Plastic

• Glass

What is the primary purpose of insulation in buildings?

• To reduce heat transfer and improve energy efficiency.

• To support the structural integrity of the building.

• To provide a decorative finish to walls.

• To increase the weight of the building.

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Which of the following best describes the function of a pulley in engineering?

• To change the direction of a force applied to lift a load.

• To measure the speed of an object.

• To store mechanical energy.

• To convert electrical energy into mechanical energy.

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NGSS.MS-PS2-1

What is the main advantage of using reinforced concrete in construction?

• It combines the tensile strength of steel with the compressive strength of concrete.

• It is lighter than traditional concrete.

• It is more environmentally friendly than other materials.

• It is easier to mold into complex shapes.