Region
Earth (Planet)
Universe
19
California
4
Outer space
4
Solar system
4
Krakatoa (Indonesia)
3
Moon
3
Africa
2
Alps
2
Death Valley (Calif. and Nev.)
2
Great Lakes (Africa)
2
Iceland
2
Indian Ocean Region
2
Indonesia
2
Italy
2
Krakatoa
2
Middle East
2
Pacific Area
2
Rocky Mountains
2
Sun
2
Vesuvius (Italy)
2
Yosemite National Park (Calif.)
2
Yosemite National Park Region
2
Arctic regions
1
Atacama Desert (Chile)
1
Chile
1
El Niño Current
1
Europe
1
Everest, Mount (China and Nepal)
1
Great Lakes (North America)
1
Hawaii
1
Himalaya Mountains
1
Japan
1
Mars (Planet)
1
Mississippi River Delta (La.)
1
New York
1
New York (State)
1
Polar regions
1
San Andreas Fault (Calif.)
1
Tropics
1
Yellowstone National Park
1