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Q: Which of the following is not one of the three major types of rocks?
  • A. Igneous rock
  • B. Magnetic rock
  • C. Metamorphic rock
  • D. Sedimentary rock
Correct Answer: Option B - Magnetic rocks” is not a recognized category of rocks. The presence of magnetism in rocks can occur due to the presence of certain minerals, such as magnetite, within the rock. • Igneous Rocks : These rocks are formed from the solidification and crystallization of molten magma or lava. Examples of igneous rocks include granite, basalt, and obsidian. • Sedimentary Rocks : These rocks are formed by the accumulation and compaction of sediment over time. Sediments can be derived from the weathering and erosion of pre-existing rocks or from the remains of plants and animals. Examples of sedimentary rocks include sandstone, limestone, and shale. • Metamorphic Rocks : These rocks are formed from the transformation of pre-existing rocks through the application of heat, pressure, or the action of fluids. This transformation occurs within the solid state, resulting in changes in the mineralogy, texture, and structure of the rock. Examples of metamorphic rocks include marble and slate.
B. Magnetic rocks” is not a recognized category of rocks. The presence of magnetism in rocks can occur due to the presence of certain minerals, such as magnetite, within the rock. • Igneous Rocks : These rocks are formed from the solidification and crystallization of molten magma or lava. Examples of igneous rocks include granite, basalt, and obsidian. • Sedimentary Rocks : These rocks are formed by the accumulation and compaction of sediment over time. Sediments can be derived from the weathering and erosion of pre-existing rocks or from the remains of plants and animals. Examples of sedimentary rocks include sandstone, limestone, and shale. • Metamorphic Rocks : These rocks are formed from the transformation of pre-existing rocks through the application of heat, pressure, or the action of fluids. This transformation occurs within the solid state, resulting in changes in the mineralogy, texture, and structure of the rock. Examples of metamorphic rocks include marble and slate.

Explanations:

Magnetic rocks” is not a recognized category of rocks. The presence of magnetism in rocks can occur due to the presence of certain minerals, such as magnetite, within the rock. • Igneous Rocks : These rocks are formed from the solidification and crystallization of molten magma or lava. Examples of igneous rocks include granite, basalt, and obsidian. • Sedimentary Rocks : These rocks are formed by the accumulation and compaction of sediment over time. Sediments can be derived from the weathering and erosion of pre-existing rocks or from the remains of plants and animals. Examples of sedimentary rocks include sandstone, limestone, and shale. • Metamorphic Rocks : These rocks are formed from the transformation of pre-existing rocks through the application of heat, pressure, or the action of fluids. This transformation occurs within the solid state, resulting in changes in the mineralogy, texture, and structure of the rock. Examples of metamorphic rocks include marble and slate.