Chapter 6 Rocks – Quiz Study Guide
Name ______Period ______Earth Science
1.All rocks contain _minerals__.
2.Mafic magma is dark_ in color.
3.Extrusive igneous rocks cool _quickly __ from lava.
4.Granite is an example of a(n)intrusive igneous__ rock.
5.Which observation about an igneous rock would support the inference that the rock cooled slowly underground?
- the rock has well-defined layers
- the rock is about 50 percent plagioclase feldspar
- the rock is light in color and low in density
- the rock has large crystals
6.Cooling and crystallization are two processes that form __igneous ___ rocks.
7.Fossils are most likely to be found in sedimentary__ rocks.
8.Sedimentary rocks of __organic __ origin would most likely be formed from the shells of marine animals.
9.When water erodes and deposits rock fragments a __clastic ____ sedimentary rock will form.
10.___Cementation_____ and __compaction _____ are two processes that can form sedimentary rocks from fragments of weathered rock.
11._Sedimentary ______rocks cover most of the continents.
12.__Particle ____ size is used to classify a rock as shale, sandstone, or conglomerate.
13.Which characteristic of an igneous rock provides the most information about how it formed? _texture__
14.Granite is an intrusive igneous rock because it cooled _slowly _____ below the surface.
15.Arrange the clastic sedimentary rocks in order from smallest to largest grain size?
Shale, sandstone, conglomerate
16._Metamorphic ____ rocks are identified by their banding on minerals.
17.Classifying rocks as igneous, sedimentary, or metamorphic is based upon differences in their __origin___.
18.The recrystallization of heated rock will form _metamorphic ____ rocks.
19.Regional ______metamorphism is often associated with mountain building.
20.Be able to identify igneous rocks and mineral composition using the Scheme for Igneous Rock Identification.
21.What property makes slate a rock that can be used for roofing shingles? It can be split into layers____
22.What metamorphic rock comes from granite? __Gneiss____
23.Contact ______metamorphism is a change in a rock that occurs when magma being forced to the surface touches the surrounding rock.
24.Metamorphic rocks form as the direct result of __heat___ and _presssure____ causing changes to existing rocks.
25.The presence of many metamorphic rocks in Virginia is an indication that the area has been subjected to intense ___heat _____ and ___pressure_____.
26. All the energy that drives the Earth’s rock cycle comes from the Earth’s interior____ and _sun_.
27.Most metamorphic processes take place several hundred _kilometers___ below Earth’s surface.