3. Which of the following scenarios best describes conditions on Earth during th
ID: 804007 • Letter: 3
Question
3. Which of the following scenarios best describes conditions on Earth during the Hadean?
Continents were covered with soil and land plants were beginning to develop. Most life was still confined to the ocean basins.
Continents were covered with lush vegetation. Amphibians were a major life form, as were insects. Landmasses were converging.
The surface was solid and continents were beginning to form. The interior has divided up into layers based on density.
Reptiles dominated the landscape. Continents were assembled into one large supercontinent called Pangaea.
The surface was hot and molten. Nickel and iron mere melted by the heat and eventually settled into the core.
5. How would low-density continental crust be produced from a mafic mantle?
How would low-density continental crust be produced from a mafic mantle?
collision of landmasses
partial melting of mantle material
rifting of tectonic plates
volcanic eruption
meteorite bombardment
6. Which of the following processes affected eastern North America during the Cenozoic Era? CHOOSE ALL THAT APPLY.
Which of the following processes affected eastern North America during the Cenozoic Era? CHOOSE ALL THAT APPLY.
Volcanism and earthquakes were widespread.
Appalachian Mountains were eroded and added sediment to the margin.
Laramide Orogeny was building mountain ranges.
Passive tectonic setting with extensive marine sedimentation.
Most of region was above sea level.
10. Which of the following characteristics best separates humans from other mammals? CHOOSE ALL THAT APPLY.
body hair
mammary glands
placental birth
bipedalism
upright posture
Continents were covered with soil and land plants were beginning to develop. Most life was still confined to the ocean basins.
Continents were covered with lush vegetation. Amphibians were a major life form, as were insects. Landmasses were converging.
The surface was solid and continents were beginning to form. The interior has divided up into layers based on density.
Reptiles dominated the landscape. Continents were assembled into one large supercontinent called Pangaea.
The surface was hot and molten. Nickel and iron mere melted by the heat and eventually settled into the core.
Explanation / Answer
3) The surface was hot and molten. Nickel and iron mere melted by the heat and eventually settled into the core.
5) partial melting of mantle material
partial melting of mantle material will leads to the formation of silca rich melts and the crystallization of these silicic melts will form continental crust .
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