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Questions and Answers
What is the main process involved in the formation of igneous rocks?
What is the main process involved in the formation of igneous rocks?
- Cooling and solidification of magma or lava (correct)
- Pressure and metamorphism
- Weathering and deposition
- Erosion and sedimentation
Where does the magma for igneous rocks come from?
Where does the magma for igneous rocks come from?
- Ocean water
- Atmospheric moisture
- Partial melts of existing rocks in either a planet's mantle or crust (correct)
- Volcanic ash
What are the two primary ways in which igneous rocks can solidify?
What are the two primary ways in which igneous rocks can solidify?
- Volcanic rocks and oceanic rocks
- Granular rocks and glassy rocks
- Intrusive rocks and extrusive rocks (correct)
- Metamorphic rocks and sedimentary rocks
What percentage of the Earth's crust by volume is made up of igneous and metamorphic rocks?
What percentage of the Earth's crust by volume is made up of igneous and metamorphic rocks?
In what geological settings can igneous rocks occur?
In what geological settings can igneous rocks occur?
What is the composition of most of the Earth's oceanic crust?
What is the composition of most of the Earth's oceanic crust?
What is the characteristic of intrusive igneous rocks due to the slow cooling process?
What is the characteristic of intrusive igneous rocks due to the slow cooling process?
Which type of rock is most commonly associated with important mineral deposits such as tungsten, tin, and uranium?
Which type of rock is most commonly associated with important mineral deposits such as tungsten, tin, and uranium?
What type of igneous rock is formed by the cooling of molten magma on the earth's surface?
What type of igneous rock is formed by the cooling of molten magma on the earth's surface?
What is the characteristic of most extrusive igneous rocks due to rapid solidification?
What is the characteristic of most extrusive igneous rocks due to rapid solidification?
What are bodies of intrusive igneous rock known as?
What are bodies of intrusive igneous rock known as?
Which type of intrusive igneous rock is usually much finer-grained and often resembles volcanic rock?
Which type of intrusive igneous rock is usually much finer-grained and often resembles volcanic rock?
What type of intrusive igneous rock forms near the surface and is usually much finer-grained?
What type of intrusive igneous rock forms near the surface and is usually much finer-grained?
What is the most common extrusive igneous rock that forms lava flows, lava sheets, and lava plateaus?
What is the most common extrusive igneous rock that forms lava flows, lava sheets, and lava plateaus?
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