Grade 12 Earth Science Worksheet

Grade 12 Earth Science: Plate Tectonics and Geological Processes

Read each question carefully and answer to the best of your ability. Show all your work for calculations. Good luck!

1. Which type of plate boundary is characterized by plates sliding past each other horizontally?

2. The process by which oceanic crust is recycled into the mantle at convergent plate boundaries is known as:

3. The Earth's outermost layer, consisting of the crust and uppermost mantle, is called the  .

4. The theory of   explains the large-scale motion of Earth's lithosphere.

5. The supercontinent that existed approximately 335 million years ago was named  .

6. Briefly explain the concept of continental drift and how it differs from plate tectonics.

7. Mid-ocean ridges are formed at convergent plate boundaries.

8. The Richter scale measures the intensity of an earthquake.

9. Observe the diagram of tectonic plates below. Identify and label the three main types of plate boundaries shown.

Match each geological feature with the type of plate boundary where it typically forms.

13. Discuss the various lines of evidence that support the theory of plate tectonics. Include at least three distinct types of evidence and explain how each contributes to our understanding of plate movement.