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π Topic Summary
The Earth is composed of several layers: the crust, mantle, outer core, and inner core. The crust is the outermost solid layer, divided into oceanic and continental crust. Below the crust lies the mantle, a semi-molten layer. The outer core is liquid, while the inner core is solid due to immense pressure. Understanding these layers helps us comprehend geological phenomena like earthquakes and volcanic activity.
π Part A: Vocabulary
Match the following terms with their definitions:
- Crust: The Earth's outermost solid layer.
- Mantle: A semi-molten layer beneath the crust.
- Outer Core: A liquid layer beneath the mantle.
- Inner Core: A solid layer at the Earth's center.
- Lithosphere: The rigid outer layer comprising the crust and upper mantle.
| Term | Definition |
|---|---|
| 1. Crust | A. A semi-molten layer beneath the crust. |
| 2. Mantle | B. The solid layer at the Earth's center. |
| 3. Outer Core | C. The rigid outer layer comprising the crust and upper mantle. |
| 4. Inner Core | D. The Earth's outermost solid layer. |
| 5. Lithosphere | E. A liquid layer beneath the mantle. |
π Part B: Fill in the Blanks
Complete the following paragraph using the words provided: Crust, Mantle, Outer Core, Inner Core, Lithosphere.
The Earth's outermost layer is the __________. Below it lies the __________, a semi-molten layer. The __________ is liquid and surrounds the solid __________. The __________ includes the crust and the uppermost part of the mantle.
π€ Part C: Critical Thinking
If the Earth's outer core were to solidify, how might this affect the Earth's magnetic field and life on Earth?
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