Igneous rock that cool quickly have small crystals, but slow cooling allows crystals to grow large. Metamorphic rocks show banding, distorted structures and foliation. (Crystal alignment). Mineral properties depend on the internal atomic arrangement and bonding of atoms. Silicon + oxygen = tetrahedron. (The basic structure of silicates.) Isostasy: Earth's crust in a dynamic equilibrium. The crust floats on denser, lower layers. At the mid-ocean ridges new crust is constantly being created. This is known as sea floor spreading. At the ocean trenches the crust being destroyed. It occurs at Earth’s subduction zones. P-waves travel faster through the Earth than S-waves. P-waves can pass through solids & liquids -- S-waves move though solids only. (Liquids absorb S-waves.) You need at least 3 seismometer stations to find earthquake epicenter. In undisturbed strata, the bottom layer is oldest. Intrusion and faults are younger than the rock in which they are found. An unconformity shows where erosion has occurred and a part of the geologic record is missing. Arid landscape usually have steep slopes with sharp angles. Humid landscape are generally smoother with rounded slopes. When in doubt, see if the Reference Tables will help!! Uranium-235 is used to find the age of (date) very old rocks. Carbon-4 is used to find the age of (date) relatively young rocks that contain organic materials. Convection currents in the mantle move Earth’s tectonic plates.
When a rock is broken into smaller pieces, surface area increases…
table to compare extrusive and intrusive rocks. Describe and compare each type in at least 150 words.
|Extrusive Rock |Intrusive Rock |
|In order to describe extrusive rocks you first need to understand|In order to describe intrusive rocks you first need to understand|
|what it means for a rock to be extrusive. The term extrusive is |what it means for a rock to be intrusive. The term intrusive is…
During the seventies punk rock emerged and along with the music came a distinct style of dressing. People wore leather jackets, torn shirts, dyed hair, tattoos and piercings. The punks dressed this way in order to identify with their beliefs and ideas, and differentiate from the mainstream. In society today we still see this style of dress on many people. However in the seventies the style was considered very taboo and unacceptable by society. When punk rock resurfaced in the 1990’s the…
As, Se, In, I and TI have been substituted for Te in the basic Ge15Tes~eutectic and
a possible role of these minor additions in prolonging device lifetime is discussed. The element aluminium has been found to have a beneficial effect on glass formation in telluride
systems and a new glass forming region, AI-As-Te, is separately reported in the appendix.
It has been shown that m e m o r y switching devices can be made from glasses
in the G e - A s - T e system and that these…
Associate Level Material
Sedimentary Rock Worksheet
Use the following table to describe and distinguish between the effects of weathering and erosion. Each response must be at least 200 words.
|Effects of Weathering |Effects of Erosion |What are the Differences? |
|Weathering is the process of rock material |Erosion is when wind, water and ice |One difference between weathering and |
|being broken up by air and water…
Formation of a romantic relationship (24 Mark)
There are many suggested ways in which to form a romantic relationship. In this essay I will be disusing the theories of Reward/Need satisfaction theory (Byrne and Clore)and Similarity (Byrne, Clore and Smeaton).
The Similarity Theory was developed by Byrne, Clore and Smeaton. According to this theory, similarity promotes liking in a person and suggests there are 2 stages in order to form a romantic relationship. Firstly, potential partners are sorted…
Accountability formation is very important in the military. There are numerous reasons why it’s important. It lets the chain in command know where their soldiers are that also lets the chain of command know the status of their soldiers. Also the formation give the platoonAccountability formation
Accountability formation is very important in the military. There are numerous reasons why it’s important. It lets the chain in command know where their soldiers…
Outline and evaluate theories into the formation of romantic relationships (8+16 marks)
Two theories that attempt to explain the formation of romantic relationships are the similarity hypothesis and the reward/need theory.
The similarity hypothesis suggests that there are two distinct stages involved, first people sort for dissimilarity, avoiding people who are too different in personality or attitudes. From the remaining pool of people, they choose the person most similar to themselves. According…
5. SEDIMENTARY ROCKS - examples of types - formation and properties
A sedimentary rock is defined and what sedimentary rock formations look like. The formation of the sedimentary rocks sandstone, limestone, chalk, shale, mudstone, coal, salt deposits. The formation of fossils is described and why they mainly occur in sedimentary rocks and their usefulness to geological scientists studying the age of rocks and to biologists and zoologists studying the evolution of plant and…
Bedding – formation of parallel layers by particles setting on sea, river, or a land surface
Strata= series of beds
Formation – series of unique strata ~ recognized on reg scale
• Fundemental geologic mapping unit
Sed rocks cover land surface & sea floor
• Found at Earth’s surface
• Thin layer ATOP igneous and metamorphic rock in crust
Occur in upper crust = surface veneer/cover
Igneous rocks = basement of crust
Cover = nonexistent to 20 km thick
Sed rocks = > 80% of E’s surface…