GEOLOGY WORDS

Geology What does Geo mean?

the science that deals with physical history of the earth the rocks from which the earth is composed the physical, chemical, and biological changes of the earth

History + earth +rocks + change

crust Where have you seen or heard the word crust before?

How is pie crust like bread crust?

Where do you think the Earth’s crust is?

the outer layer of the earth, about 22 mi. (35 km) deep under the continents and 6 mi. (10 km) deep under the oceans Just like pie crust and bread crust the earth’s crust is on the outside

mantle the portion of the earth, about 1800 mi. (2900 km) thick, between the crust and the core.

core Where is the core of an apple? What is in the core of a peach?

Where is the core of the earth? What do you think is inside the core of the earth?

the central portion of the earth, having a radius of about 2100 mi. (3379 km) and believed to be composed mainly of iron and nickel in a molten (liquid) state.

What do you think is the difference between a rock and a mineral?

mineral A naturally formed, inorganic (not living) solid with a crystalline structure

What month were you born and which mineral is your birthstone?

rock A solid mixture of crystals of one or more minerals or other materials

Minerals can be parts of rocks but rocks cannot be parts of minerals

What are the three kinds of rocks?

igneous Pretend a chocolate bar is a rock. What happens to the chocolate bar when you put it over the stove or a fire? What happens when you put the liquid chocolate back in the refrigerator for a few days?

Where would it be so hot that a rock would melt?

a rock produced under conditions involving intense heat, The word igneous comes from the Latin word for fire. Formed by melting and cooling

sedimentary formed by the depositing of sediment, Formed by weathering and erosion of other kinds of rocks. Big rocks break into little rocks and form Layers. Over time the little pieces are cemented together.

metamorphic showing structural change or metamorphism Formed by heat and pressure deep Underground Comes from meta meaning changed and morphos meaning shape

Rock Cycle What happens to water in the water cycle? What do you think happens to rocks in the rock cycle?

The three kinds of rocks, igneous, sedimentary, and metamorphic change into one of the other two kinds of rocks.

http://library.thinkquest.org/3639/BTHSTO~1.HTM http://www.youtube.com/watch?v=0AAITe0MImY