Where would you expect to find the oldest basalt on the floor of the atlantic ocean?

854

---

What is the mantle made of?

810

---

Describe the formation of igneous, sedimentary, and metamorphic rocks?

889

---

What is happening when a metamorphic rock is forming?

787

---

What is the general statement regarding the temperature of water in oceanic depths?

797

---

Why did the continents spread apart?

811

---

Contrast the process that forms igneous rocks with the process that form metamorphic rocks?

826

---

Why does a glacier move?

838

---

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

775

---

Which is the largest reef?

823

---

When does an atoll start to form?

945

---

Where are mountains of the moon?

806

---

What minerals attract lightning?

826

---

What is a hypothesis?

861

---

What layer of the earth does magma form?

849

---