1. Why is Lithosphere known as the mineral skin? 2. Give three point of differences between the Sima and Sial layers. 3. What does weathering and gradation mean? 4. Name two processes involved in gradation? 5. What is exfoliation? Please answer this ASAP.
Answers
Answer:
1-Lithosphere is also known as the 'Mineral Skin' because it is the layer of the uppermost crust of the Earth composed of rocks and minerals.
2-Sial is composed of silicon and aluminium.It is upper layer which forms a discontinuous cover over the Earth's crust and is entirely absent the ocean floor. ... Sima is composed of silicon and magnesium. This is the second layer below sial which forms the ocean base. It is also called oceanic crust.
3-Gradational processes Weathering = breakdown of material in place Gradation = leveling of land degradation (erosion) = removal o.
4-There are three processes of gradation, they are weathering, transport, and deposition. ANSWER: The two processes which are involved in gradation process are namely, weathering and transportation
5-Exfoliation involves the removal of the oldest dead skin cells on the skin's outermost surface. Exfoliation is involved in all facials, during microdermabrasion or chemical peels. Exfoliation can be achieved by mechanical or chemical means.