CK-12 Earth Science For Middle School by CK-12 Foundation PDF

By CK-12 Foundation

CK-12 Foundation's Earth technological know-how for center institution FlexBook covers the subsequent chapters: what's Earth Science?-scientific procedure, branches of Earth Science.Studying Earth's Surface-landforms, map projections, computers/satellites.Earth's Minerals-formation, use, identification.Rocks-rock cycle, igneous, sedimentary, metamorphic.Earth's Energy-available nonrenewable/renewable resources.Plate Tectonics- Earth's inside, continental glide, seafloor spreading, plate tectonics.Earthquakes-causes/prediction, seismic waves, tsunami.Volcanoes-formation, magma, eruptions, landforms.Weathering and Formation of Soil-soil horizons, weather similar soils.Erosion and Deposition-water, wind, gravity.Evidence approximately Earth's Past-fossilization, relative age dating/absolute age dating.Earth’s History-geologic time scale, improvement, evolution of life.Earth's clean Water-water cycle, sorts of clean water.Earth's Oceans-formation, composition, waves, tides, seafloor, ocean life.Earth's Atmosphere-properties, importance, layers, strength move, air movement.Weather-factors, cloud forms, air plenty, storms, climate forecasting.Climate-Earth's floor, worldwide climates, causes/impacts of change.Ecosystems and Human Populations-ecosystems, matter/energy circulation, carbon cycle, human inhabitants growth.Human activities and the Land-soil erosion, damaging materials.Human activities and Earth's Resources-renewable/nonrenewable assets, availability/conservation.MS Human activities and Earth's Water-use, distribution, toxins, protection.Human activities and the Atmosphere-air pollutants, explanations, results, reduction.Observing and Exploring Space-electromagnetic radiation, telescopes, exploration.Earth, Moon, and Sun-properties/motions, tides/eclipses, sunlight activity.The sunlight System-planets, formation, dwarf planets, meteors, asteroids, comets.Stars, Galaxies, and the Universe-constellations, light/energy, type, evolution, groupings, galaxies, darkish subject, darkish strength, the large Bang Theory.Earth technology word list.

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Maps can have many different types of looks with lots of information or just a little. The map above shows the population density of the United States, Canada and the northern part of Mexico. s easy to pick out cities based on population density. s also interesting to note the different settlement patterns in the eastern and western United States. In the west, much of the population is located in large towns. In the east, there are many large cities. There are also a lot of people spread out across the lands.

Map Projections Earth is a round, three-dimensional ball. In a small area, Earth looks flat, so it is not hard to make accurate maps of a small place. When map makers want to map the round Earth on flat paper, they use projections. What happens if you try to flatten out the skin of a peeled orange? Or if you try to gift wrap a soccer ball? To flatten out, the orange peel must rip and its shape must become distorted. To wrap a round object with flat paper requires lots of extra cuts and folds. s curved surface on flat paper (Figure below).

Earth scientists often use maps that have coordinates so that they can locate themselves or the features they are interested in. Different types of maps show different things well. For example, some types of maps show the tropical areas really well but do a terrible job depicting the polar regions. Maps as Models Imagine you are going on a road trip. Perhaps you are going on vacation. How do you know where to go? Most likely, you will use a map. s surface. There are many types of maps. Each map gives us different information.

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