Tsunamis and Earthquakes Flashcards
What did people do when they heard the Tsunami warning?
People went to high ground
How did people know the Tsunami was imminent?
The sea retreated from the land
The tsunami destroyed coral reefs, mangrove swamps, and salt water intruded on farmland making it infertile. Are these impacts on the PHYSICAL (Natural) LANDSCAPE or on HUMANS?
Physical Landscape
What was the magnitude of the earthquake in 2004?
9.3 on the Richter Scale
What is the name of a small earthquake after a big one?
An aftershock
Who warned Japan about the Tsunami?
The Indian Ocean Tsunami Warning Centre
What does the energy released during an earthquake create?
Shock Waves or Seismic Waves
Name the scale used to describe how strong an earthquake is?
Richter Scale
What is it called when the ground shakes violently due to pressure being released in the Earth’s crust?
Earthquake
Name the instrument used to measure earthquakes and earth tremors?
Seismometer
Name the place, below the surface, in the Earth’s crust where the rocks fracture and slip?
Focus
This is the point on the Earth’s crust directly above the focus. It is where the earthquake’s shaking is strongest?
Epicentre
What type of earthquake was the Boxing Day Tsunami 2004?
A megathrust earthquake.
What events will create a tsunami?
Earthquake, Landslide, Volcanoes.
What happens to cause megathrust earthquake?
An earthquake which is propelled higher than normal when a tectonic plate shakes vigorously and slips drastically lower than its neighbouring tectonic plate. The earthquake causes a massive tsunami which can destroy land easily.
