Rocks are made out of _____________ and other materials.
What are minerals?
100
Igneous rocks are formed from melted rock, also known as...
What are magma and lava?
100
This is the word for small, solid pieces of material that come from rocks or living things. It makes up sedimentary rocks.
What is sediment?
100
This type of rock forms from heat and pressure, without melting. The minerals in the rock change, making one rock turn into another rock.
What is metamorphic rock?
100
This is a series of steps on the Earth's surface and in the crust and mantle that slowly change rocks from one kind to another. Rocks are built, destroyed, and changed.
What is the rock cycle?
200
This is the way the surface of a rock looks or feels.
What is texture?
200
What are the two types of igneous rocks? HINT: These rocks are categorized by where they form.
What are extrusive and intrusive rocks?
200
This is the process of running water, wind, or ice loosening and carrying away pieces of rock.
What is erosion?
200
These animals form calcite skeletons that later turn into limestone deposits.
What are coral animals?
200
An igneous rock sinks into the Earth where it is heated and put under pressure, what type of rock will it change in to?
What is a metamorphic rock?
300
These are the particles of minerals or other rocks that give a rock its texture.
What are grains?
300
An igneous rock has a fine-grained texture, is it an extrusive or intrusive rock?
What is extrusive?
300
This is the process by which sediment becomes pressed together from the weight of heavy layers on top of lighter layers. Particles are squeezed together with great pressure.
What is compaction?
300
Limestone is an example of an ______________ rock because it is made from the remains of living things.
What is an organic rock?
300
A sedimentary rock is eroded by wind and water over time, it will break into tiny pieces called ________________.
What is sediment?
400
This is the number of common rock-forming minerals that make up most of the rocks in the Earth's crust.
What is the number 20?
400
These are 2 uses of Igneous rocks.
What are building materials, paving stones, abrasive for cleaning, sharp tools or mixed with soil to start seeds.
400
This is the process in which dissolved minerals crystallize and glue particles of sediment together.
What is cementation?
400
This type of metamorphic rock has grains that are arranged in parallel layers or bands, like leaves.
What are foliated rocks?
400
A sedimentary rock is first heated and melted, then cooled. What kind of rock is it now?
What is and igneous rock?
500
Rocks can be classified by what three things?
What are mineral composition, color, and texture?
500
This is a material made of oxygen and silicon that is in most of the Earth's minerals.