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chubhunter [2.5K]
3 years ago
13

How do earths magnetic pole reversals provide evidence for plate tectonics

Physics
2 answers:
Alinara [238K]3 years ago
6 0
Rocks get older as you move away from the water surface
lianna [129]3 years ago
5 0

Answer:

Explanation:

As per the concept of plate tectonics, The continents are like rock plates moving on the magma underneath it and magnetism is a part of it.

As we know Earth spin on its axis, this interaction of Earth's spin and magnetic material inside the Earth creates a magnetic field from North to South pole.

When hot material inside the Earth cool, it solidify and the magnetic material form crystals which align themselves along the Earth's magnetic field.

Hence by this way Earth's magnetic pole reversal provide evidence for plate tectonics.

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To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. What must be
Troyanec [42]
Using conservation of energy law:-
∑ work in = ∑ work out
and work= force* displacement 
so when we wanted to move a 100kg a distance of 1m 
we multiplied 100*1 = work out
so work in should be equal to 100*g Joules, where g is the acceleration due to gravity.
so workout = 100*g = 25*g *x (divide both sides by 25*g)
x=4m 

by the same way:-
------------------------
work in = 100kg * 2m * g (m/s^2)= work out
so work out = 25*x*g = 200* g (divide both sides by 25*g)
x=8m
6 0
3 years ago
Read 2 more answers
An oven mitt is made of a material that is a poor thermal conductor.
ddd [48]

Answer:

D

Explanation:

5 0
3 years ago
A body is accelerated continuously. What is the form of the graph?
Inga [223]
That depends on what quantity is graphed.

It also depends on what kind of acceleration is taking place ...
continuous change of speed or continuous change of direction.

-- If the graph shows speed vs time, and the acceleration is a change
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Each straight piece slopes up if speed is increasing, or down if speed
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-- If the graph shows speed vs time, and the acceleration is a change in
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-- If the graph shows direction vs time, and the acceleration is a change
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-- If the graph shows direction vs time, and the acceleration is a change
in direction, then the graph is a connected series of pieces of line. 
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or curved if the direction is changing at a rate which grows or shrinks. 
Each piece may slope up if the angle that defines the direction is growing,
or may slope down if the angle that defines the direction is decreasing.

-- If the graph shows distance vs time, and the acceleration is a
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-- If the graph shows distance vs time, and the acceleration is a change
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6 0
3 years ago
Which is true about total internal reflection?
Shkiper50 [21]

Answer:

It can occur only when light is incident on an interface where the index of refraction on the other side is less.

Explanation:

When the light passes from a denser medium, with refractive index n1, to another less dense medium, with refractive index n2, the incident light beam is refracted in such a way that it is not able to cross the surface between both media, the light beam is fully reflected and completely confining in the optically denser medium through which it propagates. For this phenomenon to occur, it is necessary that the angle of the incident light beam with respect to the normal be greater than or equal to the critical incidence angle θc. The critical angle can be calculated as :

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7 0
3 years ago
Which of the following motions has a straight line?
skad [1K]
The answer would probably be B.
8 0
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