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Teaching How earth formed

How earth formed

Earth formed about 4.5 to 4.6 billion years ago. At first, Earth was molten and lacked an atmosphere and oceans. Gradually, the atmosphere formed, followed by the oceans.

CK-12 (High School)

ESSENTIAL QUESTION:

How did the Earth form from dust?
STANDARDS:
RST.2 - Main Ideas, RST.6 - Author's Purpose

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2,3
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