Question

1. what does the mantle of the earth consist of? a solid iron layer hot, semi - solid rock a liquid outer layer a rigid layer divided into tectonic plates

Explanation:

To determine the composition of the Earth's mantle, we analyze each option:

• Option A: A solid iron layer describes the Earth's inner core, not the mantle.
• Option B: The mantle is composed of hot, semi - solid rock (also known as magma in some contexts). The heat and pressure in the mantle make the rock semi - solid and able to flow slowly over long periods.
• Option C: A liquid outer layer is the description of the Earth's outer core, not the mantle.
• Option D: A rigid layer divided into tectonic plates is the Earth's lithosphere (which includes the crust and the upper part of the mantle), not the entire mantle.

Answer:

B. Hot, semi - solid rock