4.9 El Nino and La Nina

Multiple Choice

The Coriolis Effect is caused by

• Earth rotating around the sun
• Earth rotating on its axis
• The tides
• Gravity

Multiple Choice

What is the reason for the formation of circular ocean gyres?

• Coriolis effect

• Trade winds

• Tides

• Volcanic activity

Multiple Choice

Due to the Coriolis Effect, water in the northern hemisphere moves

• clockwise
• counter clockwise
• both
• neither

Multiple Choice

Ocean currents have an affect on which two things

• climate and weather
• temperature and density
• land and sea
• equator and poles

Multiple Choice

The large, circular surface-current pattern found in each ocean.

• California Current
• Surface Current
• Gyre
• Global Conveyor Belt

Multiple Choice

Both El Nino and La Nina have this in common

• Influence birds that migrate over the ocean

• Influence rainy / dry weather world wide

• The weather at the polar regions

• The directions that ships travel in the oceans

Multiple Choice

During an El Nino, trade winds are typically...

• about average

• stronger

• weaker

Multiple Choice

Without question, ENSO events:

• Are preventable

• Eliminate sources of rain

• Are really scary

• Impact everyone on the planet somehow

Multiple Choice

Why do the fisherman of Peru and South America not welcome a strong El Nino?

• El Nino poisons the fish

• El Nino causes strong winds and currents which move fish westward

• El Nino bring cold water to the surface which kills the base of the food chain

• El Nino shuts off upwelling and nutrients needed for the marine food chain do not rise to the surface

Multiple Choice

When La Nina and hurricanes pull cold water to the surface and bring nutrient rich sediments from the seafloor, this is called ___________________.

• upwelling

• downwelling

• El zapato

• La Gloria

Multiple Choice

The image is of a(n):

• El Nino event

• La Nina event

• Non-El Nino (normal conditions)

Multiple Choice

The picture below is of a(n) ____ event.

• Non-El Nino (Normal)

• El Nino

• La Nina

Multiple Choice

The picture represents a(n) ___ event.

• El Nino

• La Nina

• Non-El Nino (normal conditions)

Multiple Choice

During an El Nino, trade winds are typically...

• about average

• stronger

• weaker

Multiple Choice

Which lists some effects of El Niño?

• warmer temperatures and more rain
• warmer temperatures and less rain
• cooler temperatures and less rain

Multiple Choice

During El Nino, what happens to the amount of precipitation a region receives?

• There is no precipitation

• The amount of precipitation increases

• The amount of precipitation decreases

• The amount of precipitation does not change