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19-4 Earth’s Moon (pages 680–683) 1. Describe features found on the moon’s surface. 2. Identify some characteristics of the moon. 3. Explain how the moon formed. Nasa's Tour of the Moon. The Moon’s Surface (page 681) 1. Describe features found on the moon’s surface.
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19-4Earth’sMoon(pages680–683)1. Describe features found on the moon’s surface.2. Identify some characteristics of the moon.3. Explain how the moon formed.
TheMoon’sSurface (page681)1. Describe features found on the moon’s surface. KeyConcept:Featuresonthemoon’ssurfaceincludemaria,craters,and highlands.
The moon’ssurface has dark, flat areas calledmaria(MAHreeuh).Mariaare flatareas ofhardened rock.
Cratersarelarge,roundpitsonthemoon.Craterswerecaused when meteoroids crashed into the moon.Ameteoroidis a chunk of rock or dust from space.
Highlands are mountains that cover most of the moon’ssurface.
CharacteristicsoftheMoon (page682) KeyConcept:Themoonisdryandairless.ComparedtoEarth,themoonissmallandhaslargevariationsinits surface temperature.
TheOriginoftheMoon(page683) KeyConcept:Scientiststheorizethataplanet-sizedobject collided with Earth to form the moon.
Scientists think that one of these big rocksmayhavecrashed into Earth.Material from Earthbrokeoff.Thebroken off portion of Earth became the moon.
Answer:The moon mayhaveformed when a big rockcrashedinto Earth