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| The number of protons in an atomic nucleus |
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| The rate at which an object changes its velocity. |
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| The difference between a measurement and its accepted value. |
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| A friction-like force that opposes the motion of objects that move through the air. |
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| The amount of radiation reflected by a surface. |
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| Average rate at which an object changes its velocity; shown by the slope of the velocity-time graph. |
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| The rate of change in position for a time interval. |
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| A substance that speeds up the rate of a chemical reaction without being changed or used up itself. |
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| Change that occurs when the speed of an object changes, or its direction of motion changes, or both; calculated by subtracting the initial velocity from final velocity. (Vi-Vf) |
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| The transfer of thermal energy from one substance to another or within a solid by direct contact of particles. |
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| Velocity changing at a constant rate. |
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| The transfer of thermal energy within a fluid and with the movement of fluid from one place to another. |
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| The movement of fluid caused by density differences. |
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| Acceleration that is opposite to the direction of motion; a decrease in the speed of an object |
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| The straight line distance and direction from one point to another. |
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| (d) a scalar quantity that describes the length of a path between two points or locations. |
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| The height of a land mass above sea level. |
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| Substances in which the particles can flow freely. |
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| A push or pull that acts on an object. |
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| Attractive force between two or more masses; causes objects to be pulled towards the center of the earth. |
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| The amount of thermal energy that transfers from an area or object of higher thermal energy to an area or object of lower thermal energy. |
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| Narrow band of fast flowing air moving west to east in the upper troposphere at boundaries between cold and warm air. |
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| The energy of a particle or object due to its motion. |
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| The theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions. |
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Definition
| one form of radiation that is visible to humans. |
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| The amount of matter in a substance or an object, The more matter the greater the mass. Measured in kilograms (kg). |
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| A diagram that gives a picture of motion by showing an objects position at given times. |
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