Define shale?

867

---

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

809

---

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

816

---

Explain the earth made of?

827

---

Define ablation?

877

---

Explain which kind of volcano is the most destructive?

831

---

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

813

---

Define happening when a metamorphic rock is forming?

914

---

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

831

---

What are the examples of techno fossils?

797

---

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

802

---

Explain what time period can carbon-14 dates have?

874

---

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

906

---

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

785

---

Explain what ways can igneous rock form two ways?

848

---