Question

1. name the 4 layers of earth.
2. which layer of earth is the hottest?
3. which layer of earth is the least dense?
4. which two layers of earth act like a liquid?
5. what three evidences did wegner use to hypothesize that the continents were movin

Explanation:

Question 6: Name the 4 layers of earth.

The four layers of the Earth are identified based on geological knowledge. The crust is the outermost solid layer, the mantle is beneath it (with upper and lower parts), the outer core is liquid, and the inner core is solid.

Among Earth's layers, the inner core is the hottest. It is a solid sphere composed mainly of iron and nickel, and the extreme pressure keeps it solid despite the high temperature (around 5,200 - 6,000 °C). The outer core is liquid, the mantle is less hot than the core, and the crust is the coolest.

The crust is the least dense layer of the Earth. The crust is composed of lighter rocks (like granite and basalt) compared to the mantle (which has denser silicate rocks) and the core (composed of dense metals like iron and nickel).

Answer:

The 4 layers of the Earth are the Crust, the Mantle (which can be divided into Upper Mantle and Lower Mantle), the Outer Core, and the Inner Core.

Question 7: Which layer of earth is the hottest?