The portion of the interior beyond the crust is called the mantle. It is in a solid-state. It has a density higher than the crust portion. The thickness ranges from 10-200 km. The mantle …

The upper mantle is predominantly solid, but this mantle’s malleable sections create tectonic activity. Two sections of the upper mantle are frequently recognised as distinct areas of …

What is Lithosphere? The lithosphere is the rigid, outermost shell on Earth. It is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of thousands …

The upper position of the mantle of the earth is called the asthenosphere which is a weaker zone. It is from this weaker zone the molten rock materials find their way to the surface. The molten …

Structure of the Atmosphere Unlike the changes in pressure and density, which decrease with altitude, the temperature changes are irregular. A change in temperature with distance is …

The Geosphere The geosphere includes all the elements that form the crust and core of the Earth. Rocks and sand particles ranging from drylands to those found at the bottom of the ocean are …

The rocky outer layer of the Earth is known as the lithosphere. The lithosphere consists of seven or eight major plates along with many minor plates. The lithosphere is composed of seven or …

Earth comprises four separate layers. Geologists believe that as the Earth cooled, the heavier and denser material sank into the centre, and the lighter ones rose towards the top. Due to this, the …

Answer: b) FALSE Explanation: The upper portion of the mantle is known as the asthenosphere. 5. Why is the term ‘SIAL’ used to refer to the crust and lithosphere? Since the major …

What Causes an Earthquake? Earthquakes occur due to sudden tectonic movements within the Earth’s crust. The Earth’s crust is divided into large sections called tectonic plates, which float …