Unit 7 Kinetic and Potential Energy

Which of the following best describes the Law of Conservation of Energy?

• Energy can be created and destroyed.

• Energy can be transformed from one form to another but cannot be created or destroyed.

• Energy is always in the form of kinetic energy.

• Energy is always in the form of potential energy.

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A ball is thrown into the air. At the highest point of its path, what type of energy is at its maximum?

• Kinetic energy

• Potential energy

• Thermal energy

• Sound energy

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Why is it important for scientific investigations to be replicable?

• To ensure that the results are unique.

• To allow other scientists to verify results and build upon them.

• To make the investigation more complex.

• To ensure that only one scientist can perform the investigation.

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Which of the following is an example of kinetic energy being transformed into potential energy?

• A car accelerating on a highway.

• A book falling off a shelf.

• A roller coaster climbing to the top of a hill.

• A light bulb being turned on.

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In a scientific investigation, why is it important to discuss and compare methods and results with others?

• To ensure everyone gets the same results.

• To improve the investigation by considering different perspectives and explanations.

• To make the investigation more competitive.

• To ensure that only one method is used.

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Which of the following scenarios best illustrates the transformation of potential energy into kinetic energy?

• A battery powering a flashlight.

• A stretched rubber band being released.

• A person eating food.

• A plant photosynthesizing.

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What is the role of models in scientific investigations?

• To provide exact replicas of real-world phenomena.

• To simplify and represent complex systems for better understanding.

• To replace experiments entirely.

• To ensure that all variables are controlled.

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A pendulum is swinging back and forth. At which point is its kinetic energy the greatest?

• At the highest point of its swing.

• At the lowest point of its swing.

• When it is at rest.

• When it is halfway up its swing.

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How can models be used to predict the outcomes of scientific experiments?

• By providing exact results without experimentation.

• By offering a visual or mathematical representation to test hypotheses.

• By eliminating the need for data collection.

• By ensuring that all experiments are successful.

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Why is it important to negotiate methods and explanations in scientific investigations?

• To ensure that everyone agrees on the same results.

• To refine and improve the investigation process through collaboration.

• To make the investigation more competitive.

• To ensure that only one method is used.

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