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Rocks and Minerals
review for rocks and minerals test
21
Science
6th Grade
01/11/2008

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Cards

Term
Magma
Definition
Molten, or hot, liquid rock that is still inside the earth
Term
Lava
Definition
Molten, or hot, liquid rock that comes out through a volcano
Term
Three Classes of Rocks
Definition
IGNEOUS ROCKS
SEDIMENTARY ROCKS
METAMORPHIC ROCKS
Term
properties to describe minerals
Definition
• Color
• Streak
• Hardness
• Shape
Term
streak
Definition
The color a mineral produces when it is rubbed across a rough white surface
Term
Mohs scale
Definition
measures hardness
Term
hardness
Definition
The degree to which a mineral resists scratching
Term
mantel
Definition
the thickest layer of the earth
Term
lithosphere
Definition
the rocky outer shell of Earth, which is made up of the crust and rigid upper part of the mantle
Term
rock cycle
Definition
a process by which rocks can be changed into different kinds of rocks.
Term
Heat and pressure
Definition
change sedimentary or igneous rock into metamorphic rock
Term
rock
Definition
a solid material made up of minerals and sometimes other substances
Term
Sediment
Definition
small pieces of material that have broken off of rocks and have been deposited by water, wind, or ice.
Term
Deposition
Definition
a process by which wind, water and gravity leave eroded sediments in new locations.
Term
Compaction
Definition
presses sediments together
Term
Organic
Definition
substances of matter that are alive or were once alive
Term
volcano
Definition
a land from that spurts water and steam
Term
mineral
Definition
a naturally formed solid substance with a crystal structure whi9ch is not formed from living things
Term
Sedimentary rocks
Definition
usually formed in water
Term
weathering
Definition
Rocks are slowly worn down by the forces of wind, water, ice, freezing and heating
Term
erosion
Definition
When the worn rock is picked up and transported
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