Grade: Grade 6 Subject: Science Unit: Plate Tectonics Lesson: 5 of 6 SAT: ProblemSolving+DataAnalysis ACT: Science

Concept Review

Review Questions

Question 1

What are the three types of plate boundaries?

Question 2

What happens at a convergent boundary?

Question 3

What is the Ring of Fire?

Question 4

How do convection currents in the mantle cause plates to move?

Question 5

What evidence supports continental drift theory?

Question 6

What is the difference between oceanic and continental crust?

Question 7

What causes earthquakes?

Question 8

How do volcanoes form at divergent boundaries?

Question 9

What is a fault line?

Question 10

Who proposed the theory of continental drift?

Answers

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1. Convergent, divergent, and transform

2. Plates collide; one may subduct under another, or mountains may form

3. Zone of volcanic and earthquake activity around the Pacific Ocean

4. Hot material rises, cools, and sinks, creating currents that drag plates

5. Matching fossils, coastlines, rock formations, and climate evidence across continents

6. Oceanic crust is thinner and denser; continental crust is thicker and less dense

7. Sudden release of energy when plates slip past each other

8. Magma rises through the gap as plates pull apart

9. A fracture in Earth's crust where movement occurs

10. Alfred Wegener (1912)