The document discusses different types of volcanoes and how they can change Earth's surface quickly. It describes cinder cone, shield cone, and composite cone volcanoes. Cinder cones are small and circular, forming from ejected cinders. Shield cones are large and shield-shaped, building up from lava flows. Composite cones like Mount St. Helens are steep-sided and cone-shaped, often erupting explosively due to trapped viscous magma. Volcanoes can quickly change Earth's surface through lava flows and explosive eruptions that spread rock and ash over wide areas.

1. What is the Earth’s Surface Like?

2. Mount St. Helens

3. Mount St. Helens

4. Mount St. Helens

5. Mount St. Helens

6. Mount St. Helens

7. Mount St. Helens

8. What can change earth’s surface?

9. Earth’s Surface Features Water covers about three-fourths of the earth’s surface. It is mainly contained in the ocean, but also in groundwater, rivers, streams, and lakes, as well as glaciers and polar ice caps. Landforms cover about one-fourth of the earth’s surface. They include mountains, hills, plains, and plateaus.

10. Mountains

11. Hills

12. Plains

13. Plateaus

15. 3 Kinds of Volcanoes

25. Cooled Lava becomes rock

26. Cooled Lava becomes rock

29. Ring of Fire

32. Shield cone volcanoes are huge; some of the largest volcanoes in the world are shield volcanoes. They are built mainly from lava flows. After an eruption the lava flows out of the vents and creates sloping sides. Their shape is similar to a warrior’s shield. When a shield volcano erupts it is not usually explosive. Sometimes instead of lava flowing from the vents of a shield cone, the lava pours out of long fissures, which is why they are so wide. The most famous shield cone volcanoes are the Hawaiian Islands. Mauna Loa is the world’s largest shield cone volcano and also the most active!

35. Layers of the earth

38. San Andreas Fault

41. Plate Tectonics

42. Seismograph

44. Dr. Charles Richter