The Nature of Science
What is Science
Science and Technology
Scientific Method
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Mapping
Landform Regions of PA
Models of Earth
Latitude & Longitude
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Minerals
Minerals
Minerals Identification
Uses of Minerals
Mining
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Rocks
Igneous Rock
Metamorphic Rock
Sedimentary Rock
The Rock Cycle
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Weathering and Soil
Weathering
Soil Formation and Composition
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Erosion and Deposition
Changing Earth's Surface
Water
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Plate Tectonics
Earth's Interior
Convection Currents
Continental Drift
Sea Floor Spreading
Theory of Plate Tectonics
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Earthquakes
Folding and Faulting
Seismic Waves
Measuring Earthquakes
Earthquake Preparation
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Volcanoes
Parts of Volcanoes
Types of Volcanoes
Volcanic Eruptions
Volcanic Features
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Geologic Time
Fossils
Relative Ages of Rocks
Absolute Ages of Rocks
Geologic Time Scale
Earth's History
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Fresh Water
Water Cycle
Surface Water
Groundwater
Watersheds
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Atmosphere
Gases
Layers
Air Pressure
Air Quality
Global Warming
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Weather Factors
Energy From the Sun
Heat Transfer
Wind
Clouds
Humidity
Precipitation
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Weather Patterns
Air Masses & Fronts
Severe Weather
Weather Disaster Preparation
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Earth, Moon, Sun
The relationship between Earth,Moon, and Sun
Rockets and Satellites
Earth's Moon
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Solar System
Astronomers - Theories
Sun
Planets
Other Objects in the Solar System
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Stars and Galaxies
Tools of Modern Astronomy
Stars
Galaxies
History of the Universe
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