22/23 Semester 1 review

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What is energy transformation?

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Energy transformation is the process of changing energy from one form to another, such as electrical energy to mechanical energy.

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What is mechanical energy?

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Mechanical energy is the sum of potential energy and kinetic energy in an object, which is used to do work.

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What is electrical energy?

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Electrical energy is the energy caused by the movement of electrons, often used to power devices.

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What is a compound?

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A compound is a substance made of two or more different atoms chemically bonded together.

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What is the Mohs Hardness Scale?

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The Mohs Hardness Scale is a scale used to measure the hardness of minerals, ranging from 1 (softest) to 10 (hardest).

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What is a chemical change?

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A chemical change is a process where substances combine or break apart to form new substances, such as burning sugar.

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

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What is hydroelectric energy?

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Hydroelectric energy is electricity generated by using the gravitational force of falling or flowing water.

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What is the role of turbines in hydroelectric dams?

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Turbines in hydroelectric dams convert the kinetic energy of rushing water into mechanical energy, which is then converted into electrical energy.

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What is the difference between a mixture and a compound?

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A mixture is a combination of two or more substances that can be separated by physical means, while a compound is a substance formed from two or more elements chemically bonded.