1. Down to Earth

2. The Restless Planet

3. Earth's Interior

4. The Sea Floor

5. The Birth of a Theory

6. Plate Dynamics

7. Mountain Building

8. Earth's Structures

9. Earthquakes

10. Geologic Time

11. Evolution Through Time

12. Minerals: The Materials of Earth

13. Volcanism

14. Intrusive Igneous Rocks

15. Weathering and Soils

16. Mass Wasting

17. Sedimentary Rocks: The Key to Past Environments

18. Metamorphic Rocks

19. Running Water I: Rivers, Erosion and Deposition

20. Running Water II: Landscape Evolution

21. Groundwater

22. Wind, Dust and Deserts

23. Glaciers

24. Waves, Beaches and Coasts

25. Living With Earth, Part I

26. Living With Earth, Part II

Episode 24. Waves, Beaches and Coasts

Where do waves get their energy?

What is moving as a wave approaches the coast?

Describe wave motion in detail.

What is wave base? How it is determined?

What happens when wave base intersects the seafloor? Describe in detail.

What is a tsunami? Describe in detail.

What is refraction, and how does it tend to even out an irregular coastline?

Describe how longshore currents transport sediments along the beach face.

Why do beaches change from season to season?

How do dams affect beach erosion?

How does the moon affect the tides?

How does glacial activity affect sea level?

What is a eustatic sea level change?

What is the greenhouse effect?

How are the use of fossil fuels causing changes in earth's greenhouse levels?

What is the role of the geologist in the protection of the coastlines?

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