Fill in the blanks.
1.
is the gaseous domain that surrounds the Earth.
2. The chains of mountains stretching over long distances are called
3. Rift valleys are also known as
4. The lower wall of a fault is known as
5. A
..... is a crack or line of weakness on the crust of the Earth.
6. The
rivers originate from the glaciers found in the mountains.
Answer these questions in brief.
Answers
Answer:
atmosphere
ranges
grabens
hanging wall
magma ice berg
Answer:
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Explanation:
1] The Earth is surrounded by a gaseous domain, commonly referred to as the atmosphere, although, etymologically, this name is only justified for the lowest and densest layer, where the oxygen content allows humans to breathe.
2] The chains of mountains stretching over long distances are called mountain chain.
3] Rift valleys are sometimes called grabens and the steep sides called horsts. The area where the tectonic plates are pulling apart is known as a divergent boundary. Well-known rift valleys under the ocean are the Mid-Atlantic Ridge and the East Pacific Rise.
4] When rocks slip past each other in faulting, the upper or overlying block along the fault plane is called the hanging wall, or headwall; the block below is called the footwall. The fault strike is the direction of the line of intersection between the fault plane and Earth's surface.
5] Volcanism (or vulcan activity) is the eruption of magma onto the surface of the Earth. Magma under the crust is under very great pressure. When folding and faulting occur, cracks or fractures appear. These are lines of weakness.