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32 Cards in this Set

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  • Back
Atmosphere
The mass of air surrounding a planet (57)
Atmospheric pressure
The pressure exerted by the atmosphere on all objects within it (57)
Barometer
An instrument used to measure atmospheric pressure (60)
Exosphere
The region of the atmosphere above an altitude of 460 kilometers (75)
Heat
Energy that is being transferred (68)
Heterosphere
The upper layer of earth's atmosphere, which exists higher that 80 kilometers (50 miles) above sea level
Homosphere
The lower layer of earth's atmosphere, which exists from ground level to roughly 80 kilometers (50miles) above sea level (61)
Ionosphere
The region of the atmosphere between the altitudes of 65 kilometers and 330 kilometers where the gases are ionized (76)
Jet stream
A narrow band of high-speed winds that circle the earth, blowing from west to east (64)
Mesosphere
The region of the atmosphere that spans altitudes of 48 kilometers to 80 kilometers (50 miles) (63)
Stratosphere
The region of the atmosphere that spans altitudes of 11 kilometers to 48 kilometers (30 miles) (63)
Temperature
A measure of the energy of motion in a substance's molecules (69)
Cohesion
The phenomenon that occurs when individual molecules are so strongly attracted to each other that they tend
to stay together, even when exposed to tension (97)
Thermosphere
The region of the atmosphere between altitudes of 80 kilometers and 460 kilometers (75)
Troposphere
The region of the atmosphere that extends from ground level t roughly 11 kilometers (7 miles) above sea level(63)
Electrolysis
Using electricity to break a molecule down into its constituent elements (81)
Hard water
Water that has certain dissolved ions in it, predominately calcium ions (100)
Polar molecule
A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared (88)
Solvent
A liquid substance capable of dissolving other substances.
Solute
A substance that is dissolved in a solute.
Hard water
Water that has certain dissolved ions in it, predominately calcium ions
Hydrosphere
The mass of water on a planet.
Hydrologic cycle
the process by which water is continuously exchanged between earth's various water sources.
Transpiration
Emission of water vapour from plants.
Distillation
Evaporation and condensation of a mixture to separate out the mixture's individual components.
Condensation
The process by which water vapor from plants.
Precipitation
Water falling from the atmosphere as rain, snow, sleet, or hail.
Adiabatic cooling
The cooling of a gas that happens when the gas expands (125)
Condensation
The process by which water vapor turns into liquid water (109)
Percolation
The process by which water passes from above the water table to below it (122)
Residence time
The average time a given molecule of water will stay in a given water source (112)
Epicenter
The point on the surface of the earth directly above an earthquake's focus (149)