OCE Chp. 8 Interactive Tsunami – Flashcards

How are tsunamis generated? -through creation of the seafloor under water -through creation of the seafloor above water -through displacement of the seafloor above water -through displacement of the seafloor under water

What is a tsunami? -a series of water waves that travel away from a fault in all directions at low speed -a series of water waves that travel toward a fault in all directions at high speed -a series of water waves that travel away from a fault in all directions at high speed -a series of water waves that travel toward a fault in all directions at low speed

Why do ships at sea tend not to notice tsunamis? -Tsunamis in deep water have small wave height and long wavelength. -Tsunamis in deep water have small wave height and short wavelength. -Tsunamis in deep water have large wave height and long wavelength. -Tsunamis in deep water have large wave height and short wavelength.

Why does the wave height of a tsunami increase as the tsunami enters shallow water? -In shallow water, the wind driving the tsunami must push a larger water column. -In shallow water, the energy of the tsunami must be contained within a larger water column. -In shallow water, the energy of the tsunami must be contained within a smaller water column. -In shallow water, the wind driving the tsunami must push a smaller water column.

What type of plate boundary are most tsunamis associated with? -convergent plate boundaries -divergent plate boundaries -transform plate boundaries

Which ocean is associated with most tsunamis? -Arctic Ocean -Atlantic Ocean -Pacific Ocean -Indian Ocean

Will Sumatra experience another tsunami like the destructive one of December 2004? -This is unlikely, because Sumatra is in the Pacific Ocean. -This is likely, because Sumatra is in the Pacific Ocean. -This is likely, because Sumatra is near many ocean trenches. -This is unlikely, because Sumatra is near many ocean trenches.