Rock Cycle
In the rock cycle, rocks are...
created, destroyed, and recreated
Metamorphic rocks are formed with two things. They are...
heat and pressure
True or False: Igneous rocks are the most common type (class) of rock.
True
Sedimentary rocks are made of...
(compressed) sediment
The layer under the Earth's crust is called...
The mantle
True or False: the rock cycle has a beginning point, when magma hardens into rock under earth's surface
False, the cycle has no end or beginning
When granite is exposed to extreme heat and pressure it becomes a metamorphic rock called...
Gneiss
Igneous rock can form in two places. What are they?
cooled lava on earth's surface, or magma that hardens under the earth's surface
What fills in the spaces between the pieces of sediment as sedimentary rocks form?
Minerals
The core of the earth is made of...
Melted or liquid rock (Molten rock)
Things that can cause "weathering", or the breaking up of rocks are...
sun, wind, rain, freezing temperatures
When limestone is exposed to intense pressure and heat it forms a metamorphic rock called...
marble
Two types of igneous rocks are...
obsidian, basalt, granite
fossils
The individual parts of earth's crust are called...
Tectonic plates
Movement of sediments from place to place is called...
erosion
Metamorphic rocks often form where...
tectonic plates are colliding
When magma hardens quickly, what happens?
No grains formed, smooth texture (obsidian)
As it gets compressed, sedimentary rock can turn into...
Earthquakes, changes to landforms, volcanoes
Understanding how rocks change helps geologists understand...
how Earth has changed over time
Mineral grains in metamorphic rock can form patterns such as...
layers, swirls or stripes
When magma hardens slowly, what happens?
Grains form in the minerals that you can see with just your eyes. gives a rougher texture (granite)
What are two types of sedimentary rock?
Lahars, tephra and lava are all...
things that come out of a volcanic eruption