Define shale?

756

---

Explain what separates the outer core from the mantle above it?

691

---

Explain how do we know magma does not originate in the liquid outer core?

712

---

Explain the earth made of?

723

---

Define ablation?

782

---

Explain which kind of volcano is the most destructive?

738

---

Explain how can we calculate or estimate the evaporation from lakes?

706

---

Define happening when a metamorphic rock is forming?

785

---

How did great britain try to end troubles with the native american in 1763?

717

---

What are the examples of techno fossils?

669

---

Explain the difference between the geoid and the surface of the earth?

703

---

Explain what time period can carbon-14 dates have?

762

---

Explain what did radon detection in arid areas can help to explore?

790

---

Explain the minimum depth needed for a feature to be considered a canyon?

703

---

Explain what ways can igneous rock form two ways?

739

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