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Science 2A Unit 5 Vocabulary
Unit 5 - Land and Water
9
Science
2nd Grade
11/30/2011

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Term
landform
Definition
one of the differenct shapes of Earth's land (page 156)
Term
ocean
Definition
a large, deep body of salty water. They cover about three-fourths (3/4) of the earth's surface. (p. 166)
Term
fresh water
Definition
water that is NOT salty. It is found in lakes, ponds, rivers and streams. It can come from melting ice and snow that flows down hills and mountains entering into streams and rivers. (p. 165)
Term
crust
Definition
outer layer of the Earth. It is very hard. It is the thinnest layer. It is also the layer of the Earth that we live on. (p. 160)
Term
mantle
Definition
the layer below the crust. It is very hot. It is between the core and the crust. (p. 160)
Term
core
Definition
The center of the Earth. It is part liquid and part solid. It is the hottest part of the earth. (p. 160)
Term
earthquake
Definition
a shake in the Earth's crust. (p. 174)
Term
volcano
Definition
an opening in Earth's mantle and crust. (p. 174)
Term
flood
Definition
water that flows over land and can not easily soak into the ground (p. 175)
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