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Home Q & A Board Science-Related Homework Help Physics Astronomy
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karan98agarwal karan98agarwal
wrote...
Posts: 510
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6 years ago
How is Earth's magnetic field generated?
 
  What will be an ideal response?

Question 2

For an atom to be neutral, it must have the same number of:
 
  a. electrons and neutrons
  b. electrons and protons
  c. neutrons and protons
  d. neutrons only
  e. electrons, neutrons, and protons

Question 3

Explain what a subduction zone is and how it is related to volcanism.
 
  What will be an ideal response?

Question 4

In the shell model, the second shell can hold up to _____ electrons.
 
  a. one
  b. two
  c. four
  d. six
  e. eight
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Replies
wrote...
#1
6 years ago
Answer to q. 1

Convection currents stir the liquid metal in Earth's core, and it also rotates as Earth rotates. Because of these motions, and because it is a very good conductor of electricity, the liquid outer core generates a magnetic field through the dynamo effect.

Answer to q. 2

b

Answer to q. 3

A subduction zone is a deep trench where one plate slides under another. Melting releases low-density magma that rises to form volcanoes.

Answer to q. 4

e
wrote...
#2
6 years ago
Cheers!!
wrote...
#3
6 years ago
Cheers too Thumbs Up Sign
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