Q3 EPD CP 8 Energy

In a heat wave in June 2017, temperatures in some southwestern U.S. states reached 49 degrees C (120 degrees F). To help cope with these high temperatures, some residents wrapped their outside metal door handles in cloth. How did this help the situation?

• Cloth and metal are both insulators, so adding cloth increases protection from the heat.

• Cloth is a conductor, so it conducts heat less than an insulator, such as a metal door handle.

• Cloth is an insulator, so it conducts heat less than a conductor, such as a metal door handle.

• Cloth is a conductor that conducts heat away from the door, whereas a metal door handle keeps the heat in the door.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

How did scientists use logical reasoning to determine chlorofluorocarbons are responsible for destroying the ozone layer?

• The scientists discovered that the hole in the ozone layer over Antarctica was growing smaller.

• The scientists discovered that the levels of chlorofluorocarbons in the atmosphere were decreasing.

• The scientists created a computer model to trace the origins of the chlorofluorocarbons in the atmosphere.

• The scientists identified possible reactions between chlorofluorocarbons and chemicals known to be present in the atmosphere.

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NGSS.MS-PS1-2

When water passes through a dam, it flows downhill to turn a turbine connected to a generator, which produces electricity that travels through powerlines to our homes and businesses. Which statement best shows the order of energy transformations that occur in this scenario?

• Kinetic --> Thermal --> Electrical

• Potential --> Kinetic --> Electrical

• Kinetic --> Potential --> Electrical

• Electrical --> Kinetic --> Potential

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

McKenzie places a heated metal cube into a beaker of water. Which statement describes how the temperature of the water, and the metal cube will change after she places the cube in the water?

• The temperature of the water will stay the same, while the temperature of the metal cube will decrease to 25 °C.

• The temperature of the metal cube will stay the same, while the temperature of the water will increase to 50 °C.

• The temperature of the water will increase, while the temperature of the metal cube will decrease until they reach the same temperature.

• The temperature of the metal cube will increase, while the temperature of the water will decrease until they reach the same temperature.

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Owen designs an experiment to determine how mass affects the kinetic energy of a car going down a ramp. He finds two toy cars for his experiment that are the same brand but different masses. He then creates the table to write his results below. How will Owen ensure his results are scientific?

• A. He will repeat his trials, and he will ask a friend to replicate his experiment with the same cars to show the results are consistent.

• B. He will replicate his trials to show that results for the experiment are consistent, and he will have a friend create a graph from his data table.

• C. He will replicate his experiment to show that results for the experiment are consistent, and then he will have a friend repeat the experiment with different cars.

• D. He will repeat his experiment using different-sized cars to show his results are expected, and then he will have a friend check that he has not made a mistake when calculating kinetic energy.

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NGSS.MS-PS3-1

Which statement is the best evidence that energy is conserved in this system?

• The chemical energy in gasoline equals the kinetic energy of the car’s motion.

• The chemical energy in gasoline equals the kinetic energy of the car’s motion and energy transformed to thermal and sound energy.

• The chemical energy of gasoline plus the kinetic energy of the car’s motion equals the energy transformed to thermal and sound energy.

• As the chemical energy of gasoline is destroyed, the same amount of kinetic energy of the car’s motion, thermal energy, and sound energy are created.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Which of the following decisions is Benito most likely trying to influence the planning commission to make based on the scientific measurements in the graph?

• where to install new electric charge stations

• where to place new wind turbines

• where to place a new solar power plant

• which beach to install a hydroelectric power plant

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NGSS.MS-ETS1-1

Why is it important that the two cars get the same type of gas?

• A. By using the same type of gas, the friends can learn both which car model gets the best mileage and which type of gas gives the best mileage.

• B. By using the same type of gas, friends can learn which type of gas gets the best mileage.

• C. If the cars do not get the same type of gas, the friends cannot find out which car model has the best mileage.

• D. It is NOT important for both cars to have the same type of gas because they are not testing which type of gas gets the best mileage.

Describe the mechanisms of heat transfer that melt the white chocolate.

• A. The stove transfers heat to the pot by conduction; the water in the pot boils and transfers heat to the bowl by convection; the bowl transfers heat to the white chocolate by conduction.

• B. The stove transfers heat to the pot by conduction; the water in the pot boils and transfers heat to the bowl by radiation; the bowl transfers heat to the white chocolate by conduction.

• C. The stove transfers heat to the pot by conduction; the water in the pot boils and transfers heat to the bowl by convection; the bowl transfers heat to the white chocolate by reflection.

• D. The stove transfers heat to the pot by conduction; the water in the pot boils and transfers heat to the bowl by radiation; the bowl transfers heat to the white chocolate by reflection.

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

Taylor has seen many sales listings for new homes. She wants to find a home that is powered by only renewable energy resources to reduce her energy consumption and bills. Which ad would Taylor want to consider?

• A. A beautiful home with solar panels, coal powered stove, and a white windmill.

• B. A beautiful home with a white windmill and solar panels on the hydroelectric grid.

• C. A beautiful home with a petroleum powered stove, solar panels on and a white windmill.

• D. A beautiful home with a white windmill and a petroleum powered stove on the hydroelectric grid.