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Book 4 Chap 1:1-1:4
pat bwoke his cwonbook skweeen so he has a woner so he is sittin by da skween
| Term | Definition |
|---|---|
| Weather | The condition of Earth’s atmosphere at a particular time and place. |
| Atmosphere | The layer of gasses that surrounds Earth. |
| Ozone | A form of oxygen that has three oxygen atoms in each molecule instead of the usual two. |
| Water vapor | Water in the form of a gas. |
| Pollutants | Harmful substances in the air, water, or soil. |
| Photochemical smog | A brownish haze that is a mixture of ozone and other chemicals, formed when nitrogen oxides,hydrocarbons, and other pollutants react with each other in the presence of sunlight. |
| Acid Rain | Rain that contains more acid than normal |
| Density | The amount of mass of a substance to a given volume. |
| Pressure | The force pushing on an area or surface |
| Air Pressure | A force that is the result of the weight of a column of air pushing down on an area. |
| Barometer | An instrument used to measure changes in air pressure. |
| Mercury barometer | An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury. Air pressure pushing on the mercury in the dish forces the mercury in the tube higher. |
| Aneroid barometer | An instrument that measures changes in air pressure without using a liquid. Changes in the shape of an airtight metal box cause a needle on the barometer dial to move. |
| Altitude | Elevation above sea level. |
| Troposphere |