Definition
Hot, liquid rock that flows from a volcano
Lava
Changes to rocks take place over a _______________ period of time.
long
Which characteristics would provide the best evidence for classifying a rock as sedimentary?
A Began forming millions of years ago deep in the Earth
B Made of smaller pieces of rock that were compacted
C Formed when rocks were heated then cooled quickly
D Resulted from liquid rock that came from a volcano
B Made of smaller pieces of rock that were compacted
Describe how to make sediments using crayons.
Break into pieces with pencil sharpener
The three main types of rocks are ___________, ___________, and _______________.
Igneous, Sedimentary, and Metamorphic
A rock that is formed from the compaction of sediments
Sedimentary Rock
_______________ type of rock can become a different type of rock.
What change must an existing rock undergo to form a metamorphic rock?
A Changing under intense heat and pressure
B Melting and cooling to form crystals
C Eroding and depositing of larger rocks
D Breaking into pieces, then squeezing together
A Changing under intense heat and pressure
Describe how to make a sedimentary rock with crayons
Compact and Cement the sediments together
Rocks are classified by the way they are _____________.
formed
Forces that combine to change the characteristics of minerals and other substances deep in earth's crust.
Heat and Pressure
_______________ rock is formed in a process that involves extreme heat and pressure.
Metamorphic
What is one process that turns sediments into sedimentary rocks?
A Organisms remove minerals from soil and water that they need to live.
B Buried deep in Earth, rock undergoes intense heat and pressure.
C Magma cools under the surface of Earth, crystallizing to form rock.
D Top layers of sediment press down on lower layers of deposited sediment.
D Top layers of sediment press down on lower layers of deposited sediment.
Describe how to turn a crayon sedimentary rock into a metamorphic rock
apply intense heat and pressure to the rock
Made of smaller pieces of rock that were compacted.
Sedimentary Rock
Occurs when rock particles or sediments are pressed together or packed down by gravity and the pressure of overlaying rock layers.
Compaction
Sedimentary rock is formed when particles of various rocks are _________________ in layers.
deposited
Which of the following best describes the formation of igneous rock?
A Rock that melts and then is cooled
B Layered rock broken into smaller pieces
C Rock changed by heat and pressure
D Small fragments of rock pressed together
A Rock that melts and then is cooled
Heat the rock using hot water and then cool it using cold water
Changing under intense heat and pressure
Metamorphic Rock
Earth’s rocks change from one type to another over time due to Earth’s processes
Rock Cycle
_____________ rock is formed when lava or magma cools or hardnes.
Igneous
Which is a process that turns rock into metamorphic rock?
A Rock buried deep in the Earth undergoes intense heat and pressure.
B Rock melts, then cools under the surface of Earth, crystallizing to form rock.
C Upper layers of rock fragments press down on lower layers of deposited sediment.
D Larger rocks are broken into smaller pieces and compacted.
A Rock buried deep in the Earth undergoes intense heat and pressure.
Describe the rock cycle
Sediments are layered together and then compacted/cemented to create sedimentary rocks. As the rocks layer on top of one another, extreme heat and pressure is applied (under earth's surface) which creates metamorphic rocks. When metamorphic rocks are heated and then cooled an igneous rock is formed.
Rock that is heated to melting, then cooled
Igneous Rock