Movie Quiz: Ring of Fire

A  the circular motion of S-waves during an earthquake

B  the passage of time between megathrust earthquakes

C  the release of stress due to an earthquake

D  the reloading of stress due to the movement of plates

A  Provide water to spray on an approaching lava flow

B  Create seismic waves that travel through the crust

C  Evacuate people during a disaster

D  Fall in a crack that opens up during an earthquake

A  An underwater landslide off the coast of China

B  A volcanic eruption in the Pacific

C  An earthquake in Alaska

D  An earthquake in the Pacific-Northwest of the US

E  An earthquake off the coast of Japan

A  there is an increase in volcanic activity

B  A megathrust earthquake occurs (rapid slip)

C  it slowly releases the strain over two weeks (slow slip)

D  it will keep building up strain for another 3,000 years

A  More than 95%

B  About Two-thirds

C  Around half

D  Nearly 10%

A  Microscopic cracks in the layers indicating tectonic activity

B  Thin layers of ash trapped between layers of ice

C  The concentration of sulfuric acid in each layer

D  The ice temperature in each layer

A  The chemical composition changes from layer to layer to tell you about what was in the atmosphere in the past.

B  The texture of the ice depends on the temperature at the time the ice forms.

C  The ice is so cold that the molecules move slowly and preserve events from long ago.

D  The thickness of each layer of ice tells you about the amount of snow accumulated

A  Most of Earth’s subduction zones are around the Ring of Fire

B  The Ring of Fire surrounds the biggest ocean on the planet

C  Most of Earth’s hot spots are within the Ring of Fire

A  Moderate. It would be very disruptive but is not likely to cause much death or destruction

B  Significant. Brick buildings and freeways could collapse. In Japan’s modern city of Kobe, thousands of people died in the 1990’s from a relatively moderate earthquake.

C  Minimal. Modern construction practices are largely earthquake resistant