Answer:
1.)A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest.
2.)The mantle is the mostly-solid bulk of Earth's interior. The mantle lies between Earth's dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth’s total volume.
3.)The sun, a part of the solar system, is the ultimate source of heat energy for Earth. Life on Earth is possible only due to the presence of sunlight. The form of energy which is obtained from the sun is called solar energy.
4.)A block of wood is floating in the water in a closed vessel as shown in the figure. The vessel is connected to an air pump. When more air is pushed into the vessel, the block of the wood floats with (neglect comp
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