1. Rapid Landform Changes Earthquakes Volcanoes Floods

2. 1/12/10: Earthquake in Haiti. A destroyed building is seen in Port-au-Prince on Jan. 12.

3. Where is Haiti?

4. Cracks crisscross a building in Port-au-Prince after the quake on Jan. 12.

5. Thousands of buildings were damaged and destroyed by the tremors, including this structure near the Hotel Villa Creole in Port-au- Prince.

6. Residents sleep in the streets of Port-au-Prince on Wednesday, Jan. 13, after a devastating earthquake hit Haiti's capital. An official with the International Red Cross said an estimated 3 million people may have been affected by the disaster. The quake toppled the presidential palace and hillside shanties alike, leaving the poor Caribbean nation appealing for international help.

7. A man calls for help as he struggles to escape the rubble at Port- au-Prince University on Jan. 13. Most of Haiti's 9 million people are desperately poor, and after years of political instability the country has no real construction standards.

8. Volcanoes Recently, there have been a number of active volcanoes spewing out hot lava and ash. The most active one is in the Central Philippines. It is called the Mayon Volcano.

9. Security forces in army trucks sent about 3,000 residents outside the danger zone surrounding the smoldering Mayon volcano, which looked set for a major eruption after days of shooting ash plumes and spilling lava. Authorities in central Albay province declared a round-the-clock ban on anyone being within the five-mile zone around the 8,070-foot mountain, the most active of the country's 22 volcanoes Source: CBS News

10. Many had refused to leave their coconut and vegetable farms during the harvest time. Police will show them pictures of victims of a 1993 eruption that killed more than 70 people to persuade them to evacuate the area.

13. Where exactly is the Mayon volcano?

14. http://www.youtube.com/watch?v=OowFvnlW I90&feature=related http://www.youtube.com/watch?v=488BkTUs Ma4&feature=related