Layers of Earth
Center of the earth
What is the core?
Rock formed by heat and pressure below the earth's surface
What is metamorphic?
Inorganic substance found in the earth
What is a mineral?
Breaking in smooth, straight lines
What is cleavage?
Person who studies rucks and minerals
What is a geologist?
Thin outer layer of earth
What is the crust?
Rock formed by layers of sediment
What is sedimentary?
Substance made from things that were NOT alive
What is inorganic?
Color of the mark made when a sample is rubbed on a hard surface
What is streak?
Movement of sediment from one place to another
What is erosion?
Makes up most of the earth's mass
What is the mantle?
Rock formed from magma or volcanic lava
What is igneous?
Small bits of weathered rock
What is sediment?
Way a mineral reflects light
What is luster?
Mohs scale determines this
What is hardness?
Loose material on the top of the earth
What is soil?
Hot melted rock below the surface of the earth
What is magma?
MIneral that can be cut and polished for use
What is a gemstone?
Ability to resist scratching
What is hardness?
Hard natural substance found in the earth
What is a rock?
Rare gemstones
What are precious stones?