Answer:
Oceanic part of this layer has a relatively homogeneous composition, while the other part is less uniform in composition
Explanation:
Your question is base on the earth crust which is either oceanic crust or continental.
The earth Lithosperic layer is divided into two part namely the oceanic crust and the continental crust.
The oceanic crust is more uniform in composition than the continental crust because of the kind of earth events that is predominant here. For example sea floor spreading . The oceanic crust is composed dominantly of Mafic rocks. The Mafic rocks are extrusive igneous rocks. This rocks are formed when magma intrudes into the ocean surface, due to rapid cooling this rocks solidified quickly to form these rocks that are mainly basaltic. The oceanic rocks are dominantly basaltic. The basaltic dominance makes the oceanic crust relatively homogeneous in composition.
Events like sea floor spreading whereby the oceanic floor diverge forming two parts are one factors that causes mantle materials(molten magma) to reach the surface to form this basaltic rocks. The separating point, the mid oceanic ridges is where new crust are formed from the up-welling of magma. As you move away from the mid oceanic ridges the rocks become older.
<span>The device that demonstrates the presence of static electricity
is called a electroscope .</span>
Answer:
Explanation:
For a charged particle moving perpendicularly to a magnetic field, the magnitude of the force exerted on the particle is:
where
q is the magnitude of the charge of the particle
v is the velocity of the particle
B is the magnetic field strength
In this problem, we have
is the charge of the electron
is the velocity
is the magnetic field
Substituting into the formula, we find the force:
Answer:
The weight is the same
3
lb
explanation
See explanation.
Explanation:
If by weight you mean the physical value measured in
l
b (or k
g
) usually called mass, then this value does not depend on a place where object is located. Object's mass would be the same everywhere even if you put it on Mars or the Sun.
The value which changes is the gravitational force. In your example it is
10
2
=
100 times greater on the Earth's surface than in the point 10 Earth's radii from its center.
