Earthquakes
The shaking of Earth's surface caused by sudden movement of rock beneath the surface.
What is an earthquake
This is molten rock inside of the Earth.
What is magma?
This is one possible cause of a tsunami.
What is an undersea earthquake?
This is something that is harmful and dangerous.
What is a hazard?
These are the remains of plants and animals that lived a long time ago.
What are fossils?
This is a break in Earth's surface that causes plates to move.
What is a fault?
This is melted rock that flows from a volcano onto Earth's surface.
What is lava?
This is one effect of a tsunami.
What is flooding?
This means to move from a place of danger to a safe place.
What is evacuate?
True or False: All earthquakes violently shake the ground and are dangerous.
What is false?
The exact location where an earthquake takes place.
What is an epicenter?
This is when melted rock, ashes and gases are released up through a volcano onto Earth's surface.
What is an eruption (erupt)?
This is a series of tall ocean waves caused by undersea earthquakes or volcanic eruptions.
What is a tsunami?
This is an underwater mountain chain made up of thousands of volcanic peaks.
What is a mid-ocean ridge?
These are sometimes contained in sedimentary rocks.
What are fossils?
This is a tool that measures earthquake activity.
What is a seismometer?
This is a possible hazard that can be caused by a volcanic eruption.
What is air pollution?
This is normally announced after an undersea earthquake.
What is a tsunami warning?
What is a trench?
These can slip past or bump into each other, causing an earthquake.
What are tectonic plates?
This is one cause of an earthquake.
What are movements along the plates?
This is where most volcanic eruptions happen on Earth.
What is the Pacific Ring of Fire?
This is what happens to tsunamis when they get closer to the shore.
What is they get taller?
This is what forms when molten rock from deep inside the earth rises to the surface.
What is a volcano?
True or False: The strength of an earthquake (1-10) depends on the size of the fault line.
What is true?