Classifying Rocks
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
The Rock Cycle
100
Geologists classify rocks into what 3 major groups?
Igneous, Sedimentary, and Metamorphic
100
Igneous rock that is formed from magma and cools very slowly UNDERNEATH the earth's surface is called ________.
Intrusive rock
100
What do we call the small pieces or particles that make up sedimentary rock?
Sediment
100
How are metamorphic rocks are created?
With extreme heat and pressure
100
Magma cools and crystallizes in the rock cycle forming what kind of rock?
Igneous rock
200
This type of rock forms from magma or lava cooling.
Igneous rock
200
What type of rock is formed from lava ON the earth's surface?
Extrusive rock
200
What is the name of this type of rock? It can be found on the streets during the winter in climates where it snows.
Rock salt
200
What types of rocks can become metamorphic rocks?
Igneous, sedimentary and other metamorphic rocks
200
Igneous rock transforms to sediment by processes called ___________ & ____________?
Weathering and erosion
300
What are rocks made up of?
Minerals
300
DAILY DOUBLE: What is the name of this extrusive rock with dark color, fine grains and low silica?
Basalt
300
What do mudstone and sedimentary rocks formed from the remains of once-living plants and animals have in common?
They are formed from layers of sediment.
300
What is this thin rock that can be used instead of paper?
Slate
300
What do we call the process of layers of sediment become pressed together over time?
Compaction
400
What should be replacing the question mark?
Cementing & Compaction
400
What is the name of this type of igneous rock that is black with a glassy texture? 
Obsidian
400
What do we call the group of rocks that includes dead plant matter or animal remains being cemented together?
Sedimentary Rocks
400
What is the process called that transforms existing rock into new types of rock?
Metamorphism
400
Charlie is designing an experiment to investigate the rock cycle. He has written the following steps.
Step 1: Gather shavings from different colors of crayons.
Step 2: Place a small pile of shavings between sheets of waxed paper and press down on them lightly.
Step 3: Place a small pile of shavings between sheets of waxed paper and press down on them with great force.
Step 4: Compare the results produced in Steps 2 and 3.
Which question might Charlie be investigating?
How does pressure impact the formation of sedimentary rocks?
500
Igneous rocks cool very quickly. When they form the rock crystals could be described as _________.
Smooth or shiny (no visible crystals)
500
What is the name of the extrusive igneous rock that can float in water? (Some people use it to clean their feet and it has many air bubbles!)
Pumice
500
Ms. Milne observed a rock that she found at the beach. She concluded that the rock was sedimentary. Which observation best supports this conclusion?
The layers within the rock!
500
What does metamorphic mean?
"to change form"
500
DAILY DOUBLE: What are the processes by which sediments become sedimentary rocks? (three words)
Deposition, compaction or cementation