Science Ch. 4
Terms
undefined, object
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- Extinct
- no longer in existence
- Igneous Rock
- fiery rock, formed when magma cools
- Sediment
- fine bits of soil that deposit in water
- Silver
- a metal that is the best conductor of electricity
- Geologist
- a scientist who studies the structure of the earth
- Lava
- molten rock that has erupted through the earth's surface
- Old Faithful
- a famous geyser in Yellowstone National Park
- Spelunkers
- people who enjoy exploring caves
- Petroleum/Crude Oil
- Oil in its natural state
- Sandtone, Limestone & Shale are __________ Rock
- sedimentary
- Diamond
- the hardest of all substances
- Natural Resources
- any material found in God's creation which is helpful to man
- Geode
- hard, rocklike object which looks like a mudball and has cyrtals inside
- Weathering
- soil is formed by this process
- Osidian, Pumice & granite are _________rocks
- igneous
- Marble & Slate are __________ rocks
- metamorphic
- Aluminum
- a lightweight, silvery-colored metal that can be formed into almost any shape
- Mantle
- the second layer of the earth - BOTH solid & liquid
- Uranium
- a radioactive metal
- StalagMITE
- a stone formation growing up fromt the floor of a cave
- Mineralogists
- scientist who study minerals
- Chemical Weathering
- when rock is changed by acid
- Gemstone
- a rare, beautiful mineral that is very hard
- Ruby
- the rarest gemstone
- Mercury
- the only metal which is liquid at room temperature
- Marble
- rock which was once limestone but was hardened as the result of extreme heat and pressure within the earth
- Amber
- the hardened sap of certain trees
- StalacTITE
- a formation which looks like a stone icicle hanging from the roof of a cave
- Mica
- a mineral that has the unique characteristic of roming large crystals
- Crust, Mantle & Core
- Three layers of the earth
- Impurities
- where quartz gets its color from
- Magma
- Molten Rock
- Shale
- rock that smells like mud
- Iron
- our most useful metal
- Graphite
- used instead of lead in pencils
- Humus
- decaying plant and animal material
- Physical Weathering
- when rock is broken by physical force
- Crystal
- a solid that has a definite shape with flat surfaces and sharp edges
- Coal
- a black or bronw rocklike substance that can be used to heat homes
- Mold
- a fossil formed when the mud that buries a plant or animal quickly hardens around it
- Crust
- the first layer of the earth - a SOLID
- Slate
- hardened shale, used form some chalkboards
- Metamorphic Rocks
- rocks thought to have changed from one type to another
- Bedrock
- solid, unmovable rock below the soil
- Petrified Fossils
- plant & animal remains that have turned to stone
- Outercore
- the earch layer of the earth - LIQUID