Final Exam Review: 8th Grade Science

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What is conduction?

Back

Conduction is the method of heat transfer that occurs through direct contact between materials, where heat moves from the hotter object to the cooler one.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

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What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum, such as the heat from the sun.

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What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state, such as an object at the top of a hill.

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What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, which depends on its mass and speed.

Front

How does mass affect kinetic energy?

Back

Kinetic energy increases with mass; if the mass of an object increases, its kinetic energy increases if its speed remains constant.

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How does speed affect kinetic energy?

Back

Kinetic energy increases with the square of the speed; if the speed of an object doubles, its kinetic energy increases by a factor of four.

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What is Newton's 1st Law of Motion?

Back

Newton's 1st Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

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What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is the formula to convert Fahrenheit to Celsius?

Back

To convert Fahrenheit to Celsius, use the formula: C = (F - 32) × 5/9.