Front

absolute zero

Back

The lowest temperature that is theoretically possible, equivalent to 273.15 °C.

Front

atmosphere

Back

The layer of air, including oxygen, nitrogen, carbon dioxide, and other gases, above the Earth's surface.

Front

atmospheric pressure

Back

The gas pressure caused by the atmosphere due to the density of the air at that height, equal to approximately 100 kPa at the surface of the Earth.

Front

gas pressure

Back

The pressure exerted by a gas due to the collisions of the particles in the gas with the container.

Front

inversely proportional

Back

This is when one value increases as another value decreases in the same ratio.

Front

liquid pressure

Back

The pressure in a liquid due to the weight of the liquid above it.

Front

pascal (Pa)

Back

The unit of pressure; 1 Pa is equal to 1 N/m².

Front

upthrust

Back

The force of an object in a fluid due to the difference in pressure in the fluid acting on the area of the object.