Diff. Geoscience
Geochemical cycles review
Name:
Period:
1.
Why does extensive igneous rock have a finer crystal structure than intensive igneous rock?
2.
Why is pumice and scoria rock low in density?
3.
Does temperature increase with depth faster in continental or oceanic tectonic plates? Why?
4.
Will igneous rock melt at a higher or lower temperature if additional pressure is applied? Why?
5.
What is viscosity?
6.
Does the viscosity of magma increase or decrease as the temperature increases?
7.
What effect does increasing the water content of magma have on viscosity?
8.
What effect does increasing the silicon dioxide content of magma have on viscosity?
9.
What makes magma “explode” when it reaches the surface of the earth?
10.
Why do veins of different mineral appear in igneous rock that has cooled slowly?
11.
How is mineral formation different when the cooling magma contains large amounts of iron and
magnesium as compared to Feldspar?
12.
Why do igneous rocks have different colors in them?
13.
How do gemstones form in igneous rock?
14.
What type of geological formation produces diamonds?
15.
How are the particles that form sedimentary rock formed?
16.
What effect does compaction have on spaces between particles and water content?
17.
What compounds hold the particles together during cementation of the particles?
18.
How does wind and water movement sort the particles by size?
19.
Describe the rocks in an oil reservoir.
20.
How do ionic material deposits like halite or calcite form?
21.
Name two organic rocks and explain why they are organic?
22.
What sedimentary rock is used to create each of the following metamorphic rocks?
A.
Hornfels
B.
Marble
C.
Quartzite
23.
What effect does heat and pressure have on the particles of sedimentary rock?
24.
Why do you find fossils in limestone but not marble?
25.
Why do the mineral crystal layers line up in some metamorphic rock?
26.
Complete the rock cycle table below
Part of rock cycle
Formation of igneous rock (2 kinds)
Formation of sedimentary rock (4 steps)
Formation of metamorphic rock
Formation of magma (complete & partial melting)
Formation of soil and sediment
27.
How sediment and soil produced?
How it occurs
28.
What is humus? How is it produced?
29.
How is organic matter broken down into forms plants can use?
30.
Describe 2 soil conservation techniques.
31.
How do metal deposits of gold, silver, and copper form in igneous rock?
32.
How are metals extracted in hard rock mining?
33.
Why are coal, oil, and natural gas used for most of the energy in the U.S.?
34.
Why do the fossil fuels cause global warming when used?
35.
Why are oil prices linked to increased industrialization in developing countries?
36.
What types of tasks use solar energy well?
37.
How can geothermal energy be used in areas where magma hot spots are present?
38.
What is a heat pump?
39.
What percentage of total U.S. energy is provided by fossil fuels?
40.
What percent of transportation energy is provided by fossil fuels?