Review for Quiz 1. What is the process of differentiation? 2. What is the prevai

Question

Review for Quiz

1.            What is the process of differentiation?

2.            What is the prevailing theory for the formation of Earth’s moon?

3.            How did Earth’s primary atmosphere form? What key gas in today’s atmosphere was missing from this early mix? Where did that gas ultimately come from?

4.            What important role do zircons play in understanding Earth’s early history? What characteristic of zircons makes them useful in this way?

5.            How did Archean-age continents differ from modern continents? What characteristic of

6.            Archean Earth caused these differences?

7.            Where is the most likely environment for early life to have originated? Why this is considered a favorable location for the formation of life?

8.            We find pyrite in Archean sediments – why is this important?

9.            What is the significance of stromatolites in the Archean? Why were they so abundant during this time? What were they responsible for? When did they reach their greatest diversity?

10.          Why were the Miller and Urey experiments so important?

11.          How did Earth’s early oceans form?

12.          What lead to the formation of BIFs?

13.          What is the significance of pillow lavas?

Explanation / Answer

1.The process through which the present earth's interior was formed is known as differentiation.

When the earth was in molten state in the beginning denser material concentrated near the center due to gravity force and lighter material concentrated near the surface.When the earth cooled and solidified ,the denser material remained at the center and lighter material remained at the surface which caused differentiation.

2. One famous theory for the formation of moon was that a mars sized object collided with the earth so many billions of years back.This collision turned the earth into molten state.This emitted material into outer orbit.

Some material fallen back to the earth.Some material collected at one place due to mutual attraction and formed the moon which we see today.

Related Questions

Navigate

• Browse (All)
• Browse R
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.