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Is table salt a rock or mineral?
Table salt, or just salt, NaCl, is a mineral. It is usually referred by geologists as the mineral halite. The difference between rocks in minerals is that rocks are made of combinations of minerals, and not the other way around. A classic way to think of this is minerals being "letters", and rocks being "words".
How geologists tell time?
RocksRocks have many mysteries to them. Many geologists study the rocks to find out the history of earth. What happened in the past? How was it back then? Have you ever wanted to know what the history of your ancestors? Well the same for geologists, they study it to see what was the weather conditions in the past, how old was the rock, was it eroded, and many other things. To determine that, geologists use their tools to find out all these things. One main tool they use is relative dating, or the sequence in which an event took place. For example, if a geologist fined a rock that was cracked almost half way, he/she will predict that an earthquake took place then wind came and eroded it. Basically, relative dating is saying first, second, third etc.However, when geologists bring the exact time something happens it is called absolute dating. Another thing about rocks is, most of the rocks are layered. The bottom layer of the rock is the oldest and the top is the youngest. When a piece of the rock is missing it is called unconformity. Some of the layers in the rock is larger or smaller than the other layer. This is due to compression for sun light or heat. Some layers may be exposed to the sun and some not. Another tool that is used is relative age. Relative age is when geologists bring two rocks from different places but they are the same age. They examine it to see the differences in these two rocks to see the effects on each environment.This is a figure of layers of a rock. This layer is made of many different types of rocks. As shown in the picture some of the layers are large and some are small. Some are dark and some are light. The top is the youngest and the bottom is the oldest. The layers show you the ages of the rocks.Erosion is when weather conditions happen and it moves materials from one place to another using snow, hail, rain, waves, wind etc. Geologists try to discover what happened in the past that made the rocks go from one place to another. Did an earthquake occur? A volcano eruption? A storm? This is one way how rocks travel around the world. This is how sometimes unconformity happens.
When you look at a metamorphic rock how can you tell it is one?
Understand that metamorphic rocks are those that have changed in some way by heat or pressure or both. Sedimentary rocks are formed from sediments and igneous rocks are formed by fire. When these rocks change again, they become metamorphic. Marble is one type of metamorphic rock.Look at the way the grain are formed. In schist rocks, you can see that the layers and the grains all go the same way. Warning Metamorphic rocks are difficult to classify because different amounts of heat or pressure to the same rock can look different.
Do geologists control Mount St Helens in any way?
Nobody "controls" a volcano. So, no.
What is the purpose of rock classification?
Rocks tell stories. The conditions under which they were formed and the environment which they encountered since being formed leave markers in different types of rocks that let geologists reconstruct the history of the planet as clearly as if it were written by a human.Note, your question may be referring to Linaeus' failed attempts to classify rocks with a binomial nomenclature in the same way he classified living organisms. His attempts failed because rocks can change in drastic ways and have characteritics of many distinct varieties in one specimen. Organisms, however, evolve and speciate in a bifurcating manner over time, which lends itself nicely to his classification system (Kingdom, phlylum, class, order, family, genus, species)
Why geologists break a rock before examining it?
Most rocks are subjected to weathering and erosion and it is difficult to see what a rock is made of if it is weathered. That is why geologists break rocks, to see a fresh example of the rock. It is also the best way of finding fossils in the field if you are working in an unfamiliar area.
Is table salt a rock or mineral?
Table salt, or just salt, NaCl, is a mineral. It is usually referred by geologists as the mineral halite. The difference between rocks in minerals is that rocks are made of combinations of minerals, and not the other way around. A classic way to think of this is minerals being "letters", and rocks being "words".
Why is it difficult for geologists to make short term predictions about earthquakes?
There is no way for them to predict one.
What things are made from rocks or minerals?
The only thing not directly related to rocks in your home are things made from wood and leather. Plastics come from oil, which is found by geologists in sedimentary rocks, metals come from rocks found by geologists. Your toilet comes from clays found and mined by geologists.
How geologists tell time?
RocksRocks have many mysteries to them. Many geologists study the rocks to find out the history of earth. What happened in the past? How was it back then? Have you ever wanted to know what the history of your ancestors? Well the same for geologists, they study it to see what was the weather conditions in the past, how old was the rock, was it eroded, and many other things. To determine that, geologists use their tools to find out all these things. One main tool they use is relative dating, or the sequence in which an event took place. For example, if a geologist fined a rock that was cracked almost half way, he/she will predict that an earthquake took place then wind came and eroded it. Basically, relative dating is saying first, second, third etc.However, when geologists bring the exact time something happens it is called absolute dating. Another thing about rocks is, most of the rocks are layered. The bottom layer of the rock is the oldest and the top is the youngest. When a piece of the rock is missing it is called unconformity. Some of the layers in the rock is larger or smaller than the other layer. This is due to compression for sun light or heat. Some layers may be exposed to the sun and some not. Another tool that is used is relative age. Relative age is when geologists bring two rocks from different places but they are the same age. They examine it to see the differences in these two rocks to see the effects on each environment.This is a figure of layers of a rock. This layer is made of many different types of rocks. As shown in the picture some of the layers are large and some are small. Some are dark and some are light. The top is the youngest and the bottom is the oldest. The layers show you the ages of the rocks.Erosion is when weather conditions happen and it moves materials from one place to another using snow, hail, rain, waves, wind etc. Geologists try to discover what happened in the past that made the rocks go from one place to another. Did an earthquake occur? A volcano eruption? A storm? This is one way how rocks travel around the world. This is how sometimes unconformity happens.
One way to tell rocks apart is by examining the feel of the rocks surface or?
General physical appearance.
What kinds of indirect evidnce do geologists use to study the structureof earth?
One way is from seismic waves, which are formed when earthquakes occur.
What do maria tell us about the Moon's history?
The answer would be quite detailed, but put simply, by studying the rocks and formations in them we can tell the age of different parts, and seismic events that may have happened there, much the same way as geologists do on Earth.
What do you use to search for oil underground without disturbing the ground?
Geologists often use sonar to search for oil without actually moving any soil or rocks. The sound respond to the liquid crude in a unique way that identifies it.
Is there any way to protect yourself for lava?
there is one way. underground or rocks which will not protect you for long.
How is metamorphic rocks organically made?
rocks pile on other rocks pushing them downward, as they reach about one eighth of the way towards the mantle the pressure and heat make metamorphic rocks
What is one way igneous sedimentary and metamorphic rocks are different?
igneous rocks are made of lava that cools and hardens and metamorphic rocks are madeby heat and pressure.
