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Chapter 3 Rocks
Study guide for chapter 3
| Question | Answer |
|---|---|
| Most rocks are a mixture of __________? | Minerals |
| What are the three types of rock? | Sedimentary, Igneous, and Metamorphic |
| How does metamorphic rock form? | By extreme heat and pressure |
| Where does the energy come from that forms the rock cycle on Earth? | The Sun and the Earth's interior |
| How do intrusive igneous rocks form? | Forms when magma hardens beneath the Earth's surface |
| How do extrusive igneous rocks form? | Forms when magma hardens above the Earth's surface |
| What is an example of an extrusive igneous rock? | Rhyolite |
| Lava that cools quickly will form an igneous rock that has what kind of texture? | Glassy |
| What does it mean when we say an igneous rock is Basaltic? | It is an igneous rock that contains 25% dark silicate minerals and 75% feldspar |
| How is a conglomerate rock formed? | Through compaction and cementation |
| What are the processes responsible for the formation of a sedimentary rock? | Weathering, erosion, deposition, compaction and cementation |
| Describe Breccia | Clastic sedimentary rock with angular particles |
| Limestone is an example of __________ | a biochemical sedimentary rock |
| What type of rock are fossils found in? | Sedimentary rocks |
| Where would you find a sedimentary rock that has ripples in it? | Along a beach or stream bed |
| Where do metamorphic processes take place? | a few kilometers below earth's surface |
| What is the term used when magma hardens beneath the Earth? | Intrusive |
| What is the term used when magma hardens above the Earth? | Extrusive |
| What is an example of an intrusive igneous rock? | Granite |
| What is an example of an extrusive igneous rock? | Rhyolite |
| What are two characteristics used to classify igneous rocks? | Composition and Texture |
| True or False: Much of the upper mantle is thought to be made of granite. | False |
| An igneous rock that contains mostly pyroxene and olivine has a __________ composition. | ultramafic |
| What does the root word " igneous" mean? | Fire |
| Where do the cements that hold sediments come from? | smaller sediments |
| What drives the Earth's rock cycle internally and externally? | Internally - heat Externally - sun |
| When igneous rocks cool slowly, what type of texture do they have? | Coarse grained |
| Limestone and chert are described as __________ sedimentary rocks? | Chemical |
| A ___________ is a solid mass of mineral or mineral-like matter that occurs naturally | rock |
Created by:
coffeegurl79