Question

Distinguish between the following pairs -
1. Crust and Core
2. Sial and Sima​

Answer 1

Answer:

1. Outer one is the Crust which is cold and solid, it floats on Mantle (Asthenosphere). Mantle is the middle layer, it is semi solid, viscous. It has two parts upper and lower mantle. Core is the inner most part, made mostly of nickel and iron.
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

hope this helps u mate^_^

Answer 2

Answer:

• Outer one is the Crust which is cold and solid, it floats on Mantle (Asthenosphere). Mantle is the middle layer, it is semi solid, viscous. It has two parts upper and lower mantle. Core is the inner most part, made mostly of nickel and iron.
• 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