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15 Cards in this Set

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Constant
varable that is not changed in an experiment.
Scientific Law
a rule that describes a pattern in nature but does not try to explain why something happens.
Science
way of learning more about the natural world that provides possible explanation to questions and involves using a collection of skills.
Hypothesis
reasonable guess that can be tested and is based on what is known and what is observed.
waxing
can only see the right half of the moon.
waning
can only see the left half of the moon.
Rotation
spinning of Earth on its axis, which occurs once every 24 hours, provides day and night, and causes the planets and stars to appearto rise and set.
Revolution
movement of earth around the sun, which takes a year to complete.
precipitation
water falling from clouds- including rain, sleet, snow ,and hail- whose form is determined by air temperature.
Tornado
violent, whirling windstorm that crosses land in a narrow path and can result from wind shears inside a thunderhead.
Hurricain
large serverestorm that forms over tropical oceans, has winds of atleast 120 km/h, and loses power when it reaches land.
Front
boundary between two air masses with different temperatures, density, or moisture, can be cold, warm, ocluded, or stationary.
Meteorologist
studies weather and uses information from doppler radar, weather sattelites, computers and other instruments to make weather maps and provide forecasts.
Air Mass
large body of air that has the same charecteristics of temperature and moisture content as the part of Earths surface.
Weather
state of atmoshereat a specific time and place, determined by factors including air pressure, amount of moisture in the air, temperature, wind, and precipitation.