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Questions and Answers
What are the three main groups into which rocks are usually grouped?
What are the three main groups into which rocks are usually grouped?
- Granite rocks, limestone rocks, and marble rocks
- Volcanic rocks, oceanic rocks, and continental rocks
- Igneous rocks, sedimentary rocks, and metamorphic rocks (correct)
- Molten rocks, weathered rocks, and transformed rocks
How are igneous rocks formed?
How are igneous rocks formed?
- Through the accumulation of sediments
- When magma cools in the Earth's crust, or lava cools on the ground surface or the seabed (correct)
- By exposure to high pressures and temperatures
- By the compression of existing rocks
What process forms sedimentary rocks?
What process forms sedimentary rocks?
- Transformation without significant melting
- Subjection to high pressures and temperatures
- Diagenesis and lithification of sediments (correct)
- Direct cooling from magma
What was the early period of human history, characterized by the use of stone tools, called?
What was the early period of human history, characterized by the use of stone tools, called?
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What is the study of rocks called?
What is the study of rocks called?
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