How do scientists believe the earth was formed?

What does it mean that the earth “differentiated”?

How do scientists believe the earth obtained its first oceans (water)?

What do scientists believe led to the formation of the first continents (land)?

What do scientists believe produced the first BREATHABLE amounts of oxygen?

How old do scientists believe the earth is?

To determine the age of the earth, scientists dated rocks from where?

When scientists look at many layers of rock on top of each other, how do they figure out which are the oldest and youngest layers?

What kinds of things do scientists date using Radiometric dating with Carbon-14? Why?

What kinds of things do scientists date using Radiometric dating with Uranium-238? Why?

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