Minerals
Igneous Rock
Sedimentary Rock
Metamorphic Rock
The Rock Cycle
100
What are minerals that can be cut and polished, giving them a beautiful appearance, called?
Gems
100
What type of rock is produced when melted from from inside the Earth cools and hardens on or under Earth's surface?
Igneous rock
100
Rocks produced when pieces of other rocks, plant and animal matter, or dissolved minerals collect to form rock layers are called what?
Sedimentary
100
What do we call rocks that are formed when older rocks are heated and/or squeezed?
Metamorphic Rocks
100
What is the name for the model that shows how different kinds of rock are related to each other, and how they change from one type to another?
The Rock Cycle
200
What is usually formed from two or more minerals?
Rocks
200
Igneous rocks that form when lava cools under the crust inside Earth, rather than on the surface are called what?
Intrusive
200
Some sedimentary rocks are formed from the remains of once living matter. What do we call this type of sedimentary rock?
Organic Rocks
200
What does the word "metamorphic" mean?
Metamorphic means "change of form"
200
What type of rock results from sediment that has been compacted and cemented?
Sedimentary rock
300
What is a naturally occurring, inorganic solid, with a definite structure and composition?
A mineral
300
Igneous rocks that form when lava cools on Earths surface are called what?
Extrusive
300
Some sedimentary rock form when seawater, loaded with dissolved minerals, evaporates. What do we call this type of sedimentary rock?
Chemical Rocks
300
What do we call it when a rock has visible layers, or elongated grains of minerals?
Foliated
300
What type of rock results from adding heat and pressure, or melting rocks such as igneous rock?
Metamorphic rock
400
What do we call a mineral that contains something that can be useful and sold?
Ore
400
Extrusive rocks can form in two different ways. They can form when volcanoes erupt and shoot out lava and ash, or the lava may ooze out of a crack in the ground. What do we call that crack in the Earth?
Fissure
400
Some sedimentary rocks are made of grains of minerals or other rocks that have moved and been deposited in layers by water, ice, gravity or wind that were then cemented together. What do we call this type of sedimentary rock?
Detrital rocks
400
What type of rock does not have distinct layers or bands?
Nonfoliated
400
What type of rock forms when magma or lava cools?
Igneous rock
500
What do scientists observe to help them identify minerals?
The mineral's physical properties
500
Intrusive rocks are produced when molten material cools below the surface of the Earth. What do we call this molten material?
Magma
500
When pebbles are mixed and cemented together with other sediment, it makes up rocks that are called what?
Conglomerates
500
If igneous rock, or sedimentary rock is exposed to extreme heat and pressure, then melts and cools, what new type of rock forms?
Metamorphic rock
500
What is the result when rocks break down due to weathering and erosion?
Sediment