The Earth
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| Mercury Venus Earth Mars | the four planets closest to the sun
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| inner planets | solid, rocky crusts
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| outer planets (except Pluto) | large diameter, less dense, gaseous stuctures, distant from the sun
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| The asteroid belt | located between the orbits of Mars and Jupiter
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| Asteroid | small irregularly shaped, planetlike objects found mainly between the orbits of Mars and Jupiter in a region called the Asteroid Belt
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| Comets | made of icy dust particles and frozen gases,look like bright balls with long feathery tails
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| Meteroids | pieces of space debris, chunks of rock and iron
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| hydrosphere | oceans, lakes, rivers and oter bodies of water. 70% of our planet's surface
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| lithosphere | 30% of earth's surface is land including continents and islands, also including ocean basins, or the land beneath the oceans.Also known as the earth's crust
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| atmosphere | a layer of gases estending about 6,000 miles above the earth's surface. The atmosphere is composed of 78% nitrogen, 21% oxygen and small amounts of argon and and other gases.
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| biosphere | all people, animals, and plants live on the earth's surface, close to the earth's surface, or in te atmosphere
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| landforms | the natural features of the earth's surface. The four major landforms are mountains, hills, plateaus, and plains. Others include valleys, canyons, and basins. Landforms often contain rivers, lakes, and streams.
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| continental shelf | The part of the continent that extends underwater.
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| Mount Everest | the highest point on earth, 29,035 feet above sea level
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| Dead Sea shoreline | the lowest dry land point at 1,349 feet below sea level
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| Mariana Trench | a long narrow underwater canyon 35,827 feet deep
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| inner core | super-hot solid, about 4,000 miles below the surface of the earth. Scientists believe that it is made up of iron and nickel under enormous pressure
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| outer core | liquid that surrounds the inner core about 1,400 miles thick. It is a band of melted iron and nickel, it begins about 1,800 miles below the surface of the earth. Temperatures reach 8,500 degrees farenheit.
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| mantle | next to the outer core it is a thick layer of hot, dense rock consisting of silicon, aluminum, iron, magnesium, oxygen, and other elements. This mixture continually rises, cools, sinks, warms up, and r ises again, releasing 80% of the heat generated from
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| Crust | a rocky shell forming the earth;s surface. Relatively thin layer of rock ranges from 2 miles thick under oceans to about 75 miles thick under mountains. It is broken into more than a dozen great slabs of rock called plates
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| continental drift | The theory that the continents were once joined and then slowly drifted apart into smaller continents
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| magma | molten rock pushed up from the mantle
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| plate tectonics | all of the activities which created many of the earth's physical features
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| subduction | a sea plate collides with a continental plate. The heavier sea plate dives beneath the lighter continental plate. The sea plate becomes molten lava
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| accretion | pieces of the earth's crust come together slowly as the sea plate slides under the continental plate
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| Spreading | sea plates pull apart allowing magma to well up
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| Folds | moving plates sometimes squeeze the surface until it buckles
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| faults | plates grind or slide past each other, creating cracks in the earth's crust
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| Earthquake | sudden violent movements of plates along a fault line
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| Ring of fire | the most earthquake-prone area on the planet. A zone of earthquake and volcanic activity surrounding the pacific ocean. Marks the boundary where the plates that cradle the Pacific meet the plates that hold the continents surrounding the Pacific
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| Weathering | the process that breaks down rocks on the earth's surface into smaller pieces.
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| Erosion | the wearing away of the earth's surface by wind, glaciers, and moving water
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| Wind Erosion | the movement of dust, sand, and soil from one place to another.
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| loess | a fertile, yellow-gray soil deposited by the wind
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| Moraines | large pile of rocks and debris left behind from receding glaciers
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| Water Erosion | The most significant cause of erosion from fast moving water-rain, rivers, streams, and oceans
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| The Water Cycle | regular movement of water from the oceans to the air to the ground and finally back to the oceans
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| Evaporation | changing of liquid water into vapor or gas
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| Condensation | when warm air cools it cannot retain all of its water vapor, so the excess water vapor changes into liquid water
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| Precipitation | When clouds gather more water than they can hold they release the moisture, which falls to the earth as rain, snow, or sleet
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| Oceans | 97% of the earth's water that circles the planet divided into 4 oceans
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| Sea, Gulf, and Bays | bodies of salt water smaller than oceans
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| Desalination | turning salt water into drinking water
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| Freshwater | only 3% of the earth's total water supply, and most is not available for human consumption. More thatn 2% is frozen in glaciers and ice caps. .5% is found beneath the erath's surface
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| Groundwater | freshwater that lies beneath the earth's surface, comes from rain and melted snow that filter through the soil and from water that seeps into the ground from lakes and rivers.
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| aquifer | an underground porous rock layer often saturated with water in the form of a stream
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To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
tbostwick
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