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Biblioteka

Test: Development of Earth

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Posljednje ažuriranje about 3 years ago
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Pitanje 1
1.

After Earth's formation 4.6 billion years ago, several processes kept the surface hot and molten (liquid)..Match the correct term to their description or picture.

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

accretion

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Extraterrestrial comets, asteroids, meteorites hitting Earth produced heat

differentiation

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Planet attracts matter, gets big and gravity compresses planet, producing heat

radiation

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Denser (heavier) elements settle into layers producing heat

Bombardment from space material

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Earth's core produces heat from radioactive decay

Pitanje 2
2.

Re-order Earth's atmospheres from earliest (first) to present

  1. Light, simple elements present get 'blown away' by solar winds

  2. formation of water vapor and ammonia from volcanic outgassing as well as carbon dioxide

  3. water vapor and oxygen present; sun has formed ozone and nitrogen

Pitanje 3
3.

This type of organism produced much of Earth's early oxygen.

Pitanje 4
4.

Match the description to the picture

Drugi mogući odgovor:
oceanic crust
continental crust
Pitanje 5
5.

Which of Earth's two types of crust is the densest (heaviest)?

Pitanje 6
6.

How long ago did Earth form?

Pitanje 7
7.
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Pitanje 8
8.

Which layer is solid iron

Pitanje 9
9.

The sudden increase in diversity of animals is known as?

Pitanje 10
10.
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Pitanje 11
11.