all Verizon c @ * 93% 12:57 PM d21.arizona.edu 1. What is the name of the very c

Question

all Verizon c @ * 93% 12:57 PM d21.arizona.edu 1. What is the name of the very common substance whose sold phase floats in its own liquid? What does this tell you about the relative densities of the solid and liquid phases of this substance? Why is this substance unique compared to magma and rocks? 2. Name 3 processes to transfer heat [not melt rocks). Melting lecture PPT on 20 Feb 2018) (Hint: see "Thermodynamics" portion of 3. When the Earth's layers formed, was the Earth mostly solid or liquid (magma)? How does this relate to the forming of Earth's different layers of crust/mantle/core 4 Would the Earth be layered different than today if it was solid when it formed? (Nes/No). What about if it was liquid but cooled extremely quickly (within hours)? (Yes/No) Explain your reasoning. For D21 S. In what setting is the biggest percentage of the lava generated on Earth? (Hint: Think about plate boundaries) what is that pcentage? 6. What are the three ways that solid rock can melt within the Earth? (Hint: The three causes were discussed in lecture on 21 Feb 2018) 7. If the interior of the Earth is mostly solid today, where does the lava that erupts from volcanoes come from? (Hint: this is asking about the depths where magma foms, not a

Explanation / Answer

1-

Water is the common substance which in its solid form (ice) floats in its liquid that is water itself.

The density of ice is lower than the density of water. That is why it floats over water.

It is unique because it has very low melting point than rock.

2-

Conduction

Convection

Radiation

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