EARTHS CATASTROPHIC EVENTS

HURRICANES

• . Each hurricane usually lasts for over a week, moving 10-20 miles per hour over the open ocean.
• Hurricanes destroy lots of houses
• The life of hurricanes can last more than two weeks

VOLCANOES

• Volcanoes are formed when magma from within the Earth's upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
• An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls.

WILD/FOREST FIRE

• 100,000 wild fire and forest clear 4 million to 5 million acres
• These violent infernos occur around the world and in most of the 50 states, but they are most common in the U.S. West, where heat, drought, and frequent thunderstorms create perfect wildfire conditions.

EARTHQUAKES

• Earthquakes are measured using observations from seismometers.
• Around 4.4 million households in northeastern Japan were left without electricity and 1.5 million without water.

FLOODS

• Flooding happens wen its heavy rain
• Floods that happen very quickly are called flash floods

TSUNAMIS

• Tsunami waves do not resemble normal sea waves, because their wavelength is far longer.
• Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves.