NOSB 2018 (Regional Competition 1/Round 11)

Front

What is the Larsen C ice shelf?

Back

A large ice shelf located in the Antarctic Peninsula that experienced significant calving in the summer of 2017, creating very large icebergs.

Front

What are Fully Developed Seas?

Back

A physical state that occurs when waves reach their maximum size for a given set of storm conditions.

Front

Which regions reported a decline in aquaculture production in 2015 according to a 2017 UN FAO report?

Back

Americas and Oceania.

Front

What is the Benioff zone?

Back

A deep, active seismic area that delineates a subduction zone.

Front

What is the significance of wave phase velocity?

Back

Phase velocity is the speed at which a wave phase propagates in a medium.

Front

What is group velocity in wave theory?

Back

Group velocity is the speed at which the overall envelope shape of the wave's amplitudes (known as the modulation or envelope) propagates through space.

Front

What is a subduction zone?

Back

A region of the Earth's crust where one tectonic plate moves under another, leading to geological activity such as earthquakes and volcanic eruptions.

Front

What is storm surge?

Back

An abnormal rise in sea level accompanying a storm, caused by strong winds and low atmospheric pressure.

Front

What are non-dispersive waves?

Back

Waves in which all wavelengths travel at the same speed, typically observed in shallow water.

Front

What is the difference between phase velocity and group velocity?

Back

Phase velocity is the speed of individual wave crests, while group velocity is the speed at which the overall shape of the wave's amplitudes travels.