Which of the following layers of Earth is a liquid layer with the highest density?
outer core
mesosphere
lithosphere
asthensophere
Outer core
To find out which layer of the Earth is a liquid layer with the highest density, let's break down the options and examine each one.
1. Outer core: The outer core is the layer located directly below the Earth's mantle. It is composed predominantly of liquid iron and nickel, making it a liquid layer. However, the density of the outer core is not the highest among the options.
2. Mesosphere: The mesosphere is a layer within the Earth's atmosphere, and it is not a part of the Earth's internal structure. Therefore, the mesosphere is not the correct answer.
3. Lithosphere: The lithosphere is the Earth's outermost layer, consisting of the brittle uppermost part of the mantle as well as the crust. It is solid and comparatively less dense, so it is not the correct answer.
4. Asthenosphere: The asthenosphere is a layer in the Earth's upper mantle, located beneath the lithosphere. It consists of partially molten rock, which means it contains both solid and liquid materials. While it does have some liquid content, the density of the asthenosphere is not the highest among the given options.
Therefore, the correct answer is the outer core. It is the liquid layer within the Earth with the highest density.