A trace fossil is a footprint, trail, or trace of an animal, rather than the animal itself.
Answer:
Shock or impact metamorphism
Explanation:
There are different types of metamorphism. These are:
- Contact metamorphism
- Regional metamorphism
- Impact or contact metamorphism.
Impact or shock metamorphism results from concentrated and targetted pressure on a particular rock. It is usually from the collision of a bollide with the surface of the earth. The resulting impact quickly alters the rock metamorphically thereby deforming it and causing the minerals to rearrange in a new way.
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Answer:
<u>Called as mantel melting</u>
Explanation:
- The mantel rocks can break and melt without the increase in temperature due to the overexerted pressure of the rocks.
- This process is called decompression melting. Rocks can melt in the mantel due to dehydration thus producing molten magma and lava.
- As the rocks don't melt homogeneously there is a complex mixture of mineral content during the subduction and presence of volatile substances like the water or CO2.
Answer and Explanation:
For a satellite of mass m, orbiting at a distance r from the center centrpetal force = gravitationa pull:
GmM/r2 =mw2r
or GM =w2r3 = (2Pi/T)2 * r3
or (T1/T2)2 = (r1/r2)3
Given TT2/T1 = 8, r1 = 2.2rmars + rmars = 3.2rmars
(r2/r1)3 = 8 2 = 64 = 43
(r2/r1) = 4
r2 = 4 * r1 = 4 *3.2rmars = 12.8rmars
So distance of the satellite from the center of Mars = 12.8rmars = 12.8 * 3.397 x 106 m = 4.348 x 107 m