Define shale?

823

---

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

754

---

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

773

---

Explain the earth made of?

794

---

Define ablation?

830

---

Explain which kind of volcano is the most destructive?

789

---

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

758

---

Define happening when a metamorphic rock is forming?

857

---

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

776

---

What are the examples of techno fossils?

746

---

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

760

---

Explain what time period can carbon-14 dates have?

822

---

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

858

---

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

744

---

Explain what ways can igneous rock form two ways?

807

---