Geologic Time Scale
A scientist that studies the Earth's crust is known as a _______________________.
geologist
Name the 3 types of rocks.
igneous, metamorphic, and sedimentary
True or False: Smelting is part of the rock cycle.
False
The rock cycle is a ___________ of processes that describes how rock rock changes.
web
In terms of age, rocks located deeper beneath the surface are _________________ than rocks located closer to the surface.
older
Rocks that form from the cooling of magma below the surface or lava at the surface is called _______________________ rock.
igneous
Metamorphism means a change of rock type due to _________________________ and __________________________.
heat;pressure
Most metamorphic rock is found ________________________________________.
deep underground
__________________________ is the term used to describe a way of estimating the age of a rock based on its position.
Relative dating
Heat and pressure deep beneath Earth's surface can change any rock into _____________________ rock.
metamorphic
_______________________ breaks down rocks while ____________________ moves rocks.
weathering;erosion
Sedimentary rocks tend to form in __________________________________.
layers
Scientists call the timeline of Earth’s history being based on older rock layers being underneath younger rock layers the ______________________________________.
geologic time scale
Fossils are mostly found in _______________________ rock.
sedimentary
__________________________ and ______________________ turn sediment into sedimentary rock.
compaction; cementation
Describe the three major types of rocks. Must include:
-The names of the 3 types of rock
-How each rock forms
The three types of rocks are igneous, metamorphic, and sedimentary rock. Igneous rock forms when magma or lava cools and hardens. Metamorphic rock forms due to heat and pressure and are formed deep underground. Sedimentary rock forms when sediment is compacted and cemented together to form rock.