Geology

A Changing Earth by Heather Miller

By Heather Miller

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A T age 9 ien e: A c sc R eal World Changing Earth 2 Glossary basalt lava (buh-SAWLT LAH-vuh) very fluid, hot melted rock that comes out of a volcano or crack in the earth’s surface cinders (SIN-durz) small pieces of cooled lava dunes (DOONZ) large sloped hills of sand formed by the wind erosion (i-RO-zhun) the gradual wearing away by water and/or wind faults (FAWLTZ) large cracks in the earth’s crust where two plates or sections of rock often rub against each other glaciers (GLAY-shurz) large sheets or rivers of ice that move slowly down mountains or across valleys and plains magma (MAG-muh) melted rock beneath the earth’s surface Pangaea (pan-JEE-uh) huge landmass thought to exist 200 million years ago that split into what are today’s seven continents plates (PLAYTS) sections of the earth’s crust that make up the earth’s surface plate tectonics (PLAYT tek-TAWN-ix) theory that earth’s surface is divided into large, thick plates that are always moving L 21st Century Skill s 30 ibrary For More Information Books Catherine Chambers and : icholas Lapthorn, Mountains.

His movement caused by ice can also make rocks tumble down the side of a mountain. N P A here are 452 volcanoes located along the ring. he ring affects the entire est Coast of the nited States. ( ashington, regon, and California). A T age 9 ien e: A c sc R eal World Changing Earth 2 Glossary basalt lava (buh-SAWLT LAH-vuh) very fluid, hot melted rock that comes out of a volcano or crack in the earth’s surface cinders (SIN-durz) small pieces of cooled lava dunes (DOONZ) large sloped hills of sand formed by the wind erosion (i-RO-zhun) the gradual wearing away by water and/or wind faults (FAWLTZ) large cracks in the earth’s crust where two plates or sections of rock often rub against each other glaciers (GLAY-shurz) large sheets or rivers of ice that move slowly down mountains or across valleys and plains magma (MAG-muh) melted rock beneath the earth’s surface Pangaea (pan-JEE-uh) huge landmass thought to exist 200 million years ago that split into what are today’s seven continents plates (PLAYTS) sections of the earth’s crust that make up the earth’s surface plate tectonics (PLAYT tek-TAWN-ix) theory that earth’s surface is divided into large, thick plates that are always moving L 21st Century Skill s 30 ibrary For More Information Books Catherine Chambers and : icholas Lapthorn, Mountains.

He more you blow, the more sand is moved. s the sand moves, you will soon see the shells and the rocks reappear. A W T T T T T A A W A E A N A T A U R A U A T U A P A R N N N N P A A R A R P U A he tallest mountain in the nited States is Mount McKinley in laska. nswers will vary slightly as egener’s theory is still debated. he eastern coast of South merica fits well against the western coastline of frica. he eastern side of the nited States fits with the upper western lobe of frica. he southwest portion of sia fits against the northeast coast of frica, while the northeast section of orth merica seems to line up with the western side of urope and sia.

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