Earth Science Grade 5

Frage	Antworten
atmosphere	the layer of gases that surrounds the earth and protects it from too much sunlight
lithosphere	rocks, plants, and minerals make up this layer
the crust	the outer part of the lithosphere
people build homes and cities on this layer	lithosphere
Earth's lithosphere contains	rocks, soil, and minerals
the center layer of the earth	core
core	center layer of the earth, made up of solid, very hot metals
mantle	layer below the crust, partly solid and partly semi-solid
What did early geographers notice in the 1500s?	the continents fit together like puzzle pieces
plate tectonics theory	says that the earth's surface is made up of about 20 moving plates
how continents move	explained by plate tectonics theory
Plate movement causes what?	earthquakes, mountains, and volcanoes
weathering	breaking down or physically changing rock
When does water cause physical weathering?	Breaks a rock into pieces by expanding when it freezes
hypothesis	a guess or idea
scientific theory	plate tectonics
igneous rock	when melted mantle cools
metamorphic rock	igneous or sedimentary rock that has been changed by heat or pressure
sedimentary rock	sand grains that have been cemented together
sand	occurs when weathered, igneous rock breaks down
delta	new land formed at the mouth of a river by deposition
fossil	the remains of any organism
the rock cycle	the process of how rocks change form
erosion	caused by strong winds or water
4 spheres	1. biosphere - all living things 2. atmosphere - gases around Earth 3. hydrosphere - water on and around earth 4. lithosphere - layer of rocks, soil, and minerals
Pangea	supercontinent that existed millions of years ago; split apart into seven continents through plate movement

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	Erstellt von Angelique Colby vor etwa 9 Jahre