Once magma reaches the surface of the Earth, it is now called this.
What is lava?
100
Often these plant and animal remains are found in sedimentary rock.
What are fossils?
100
The two forces that form metamorphic rocks?
What is extreme heat and pressure?
200
The Mohr's hardness scale can be used to identify the _____ of minerals.
What is hardness?
200
When magma cools and hardens, it becomes this kind of rock.
What is igneous rock?
200
An extrusive rock that is smooth and looks like shiny black glass.
What is an obsidian?
200
When the sediment is pressed together in layers to form a rock, it is called this.
What is sedimentary rock?
200
Metamorphic rocks can be formed from either _______ rocks or _____________ rocks.
What is igneous or sedimentary?
300
The way a mineral splits.
What is cleavage?
300
If the igneous rock cools below the Earth, many of these form in the rock.
What are crystals?
300
Rock cycle! These forces cause a sedimentary rock to become a metamorphic rock. (look on p 180, if you need help)
What is extreme heat and pressure?
300
Sediment is most often moved by these two forces of nature.
What is water and wind?
300
When changed into a metamorphic rock, the physical _______ of the rocks change.
What is properties?
400
These properties help identify minerals. Hint: Look at Mineral Identification Table on page 145 of your book.
What is hardness, luster, streak, and color?
400
A rock that cools and hardens deep below Earth's surface is called this. Give an example of one. p 152
What is an intrusive rock? Granite
400
Be a rock detective! Explain a common feature of metamorphic rocks that might help you identify one. p 178-179
What is metamorphic rocks often have colored bands?
400
Sediment is composed (made up) of this. p 162-163
What is tiny particles of rock, minerals, plants, bones, shells or other animal materials?
400
Describe the rock cycle.
What is the three basic kinds of rocks changing from one form to another?
500
All rocks are made of these. There are 30 common ones usually found in rocks. Name five.
What are minerals? Answers may vary
500
This determines the size of mineral crystals in igneous rocks. Name the two classifications of igneous rocks.
What is whether they cooled slowly under the earth or rapidly outside the earth? What is intrusive (inside the Earth) and extrusive (outside the Earth)?
500
The name of a heavy looking igneous rock that has lots of holes in it. Explain how the holes got there. Page 154-155
What is pumice? The holes were formed because it has gas bubbles trapped in it from when it was formed.
500
This is different about each layer of sedimentary rock? How can you tell which is oldest and why?
What is they were each deposited at a different time. The layer at the bottom is oldest because it was deposited first.
500
Compare granite, an igneous rock, with sandstone, a sedimentary rock. How are they different?
(Must describe two feature of each)