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Science weather test

Matter everything around you
Atoms the smallest bit of matter
Molecule two or more atoms make a molecule
Solid a state of matter that holds it's shape because the molecules are tightly packed
Liquid A state of matter that is able to flow
Gas A state of matter where the molecules are spread out
Mass Measured in grams. the amount of matter an object has
Volume How much space matter takes up
Density A way to measure how tightly packed the atoms and molecules are in an object
Properties of air Air has mass, volume, density and weight. air is a gas and exerts pressure
Air Pressure The weight of the atmosphere pressing down on earth
Gravity A force that pull an object
Pressure A force that pushes and object
Atmosphere A mixture of gases that surrounds a planet
Altitude The distance above earths surface. As altitude increases in the troposphere and pressure decreases.
Composition of Earths atmosphere Earth’s atmosphere consists of 78% Nitrogen, 21% Oxygen, and 1% of other trace gases like argon and carbon dioxide. Besides these gases, the atmosphere also consists of solids like volcanic ash, pollen, sea salt, and dust.
Troposphere The lowest layer of the atmosphere. Densest layer of the atmosphere that is the closest to the Earth’s surface. Weather occurs there. As altitude increases, air pressure decreases. As altitude increases, temperature decreases.
Stratosphere Layer of the atmosphere above the Troposphere. The Ozone Layer is located at the top of this layer. Ozone protects us from receiving too much of the sun’s radiation.
Created by: alexgertler