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7th Grade Science Midterm Review Atmosphere: Composition and characteristics of the atmosphere, Air quality, Clorofluorocarbon, Acid rain, Ozone, Layers of the atmosphere, Weather, fronts, and air masses, Thermometer, Barometer, Condensation, Weather symbols, Meteorology, Cause of wind, Cumulonimbus clouds, Groundwater, Humidity, Greenhouse gases Erosion: Landslides, erosion by gravity vs. erosion by water vs. erosion by wind, glaciers, ways to reduce erosion, talus slope, weathering – physical vs. chemical, U vs. V shaped valleys, soil, runoff Force and Motion: Net force, magnet properties, magnetic field, Newton’s laws of motion, balanced and unbalanced forces, acceleration, gravitational force, speed, velocity, friction and ways of reducing friction Work and Simple Machines: Inclined plane, screw, mechanical advantage, wheel and axle, pulley, lever, wedge, work, energy, force, system, block and tackle, classes of levers, fulcrum 7th Grade Science Midterm Review Atmosphere: Composition and characteristics of the atmosphere, Air quality, Clorofluorocarbon, Acid rain, Ozone, Layers of the atmosphere, Weather, fronts, and air masses, Thermometer, Barometer, Condensation, Weather symbols, Meteorology, Cause of wind, Cumulonimbus clouds, Groundwater, Humidity, Greenhouse gases Erosion: Landslides, erosion by gravity vs. erosion by water vs. erosion by wind, glaciers, ways to reduce erosion, talus slope, weathering – physical vs. chemical, U vs. V shaped valleys, soil, runoff Force and Motion: Net force, magnet properties, magnetic field, Newton’s laws of motion, balanced and unbalanced forces, acceleration, gravitational force, speed, velocity, friction and ways of reducing friction Work and Simple Machines: Inclined plane, screw, mechanical advantage, wheel and axle, pulley, lever, wedge, work, energy, force, system, block and tackle, classes of levers, fulcrum
