Interior of Earth

Choose the Correct Answer

Correct Answer : Option b

Explanation
Item 1 is correct: Volcanic Eruption gives us information about the Earth’s Interior as and when the molten material (magma) is thrown onto the surface of the earth, during volcanic eruption it becomes available for laboratory analysis.

Item 2 is not correct: The seismic activity is indirect sources to know about the Interior of the Earth.

Item 3 is not correct: Meteors provide clues about the composition of celestial bodies and the early solar system, including materials similar to those found in the Earth's core and mantle. However, they do not come directly from the Earth itself, so they are not considered a direct source. Instead, they help scientists infer information about Earth's internal composition by comparison.

Item 4 and 5 are correct: The most easily available solid earth material is surface rock or the rocks we get from mining. Rock Samples collected from the Earth's surface, mines, or drilled from beneath the surface give insights into the composition and structure of the Earth's crust.

Besides mining, Scientists are exploring deeper into the Earth's crust through projects like the "Deep Ocean Drilling Project" and the "Integrated Ocean Drilling Project." The deepest drill, at Kola in the Arctic Ocean, reached 12 km. These projects have provided valuable information by analyzing materials from various depths.