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 돌덩이 학습 |
 조회: 98
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earth science 관련 용어 배웠네요.
crust = soil + rock
soil (dirt = ground-up rock + pebbles + dead leaves and sticks)
sedimentary rocks : sandstone, shale, limestone
"sedimentary" comes from a word that means "to settle."
metamorphic rocks : quartzite, slate, marble
"metamorphic" comes from a word that means "to change."
igneous rocks : basalt, obsidian, granite, pumice
"igneous" comes from a word that means "fire."
fossils
limestone caves (stalagmites(g for ground), stalactites(c for ceiling))
crust -> melted rock -> mantle -> outer core -> inner core
volcanoes : cinder cone, composite, shield
lava
생활영어 배웠네요.
get off !
knock it off !
cut it out !
give it time.
who cares ?
who knows ?
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 2010년 09월 04일 12:36:33 |
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