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

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

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

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.