El Nino & La Nina

What causes La Nina?

• cooling of water in the Atlantic Ocean off the coast of South America
• cooling water off the Atlantic coast of the US
• cooling water in the Pacific Ocean off the coast of South America
• warm water in the Pacific Ocean off the coast of South America

The El Nino will cause what kind of weather in the southern US?

• cold and dry
• cold and wet
• warm and wet
• warm and dry

The El Nino is caused by

• cold water off the Atlantic coast of South America
• warm water in the Pacific off the coast of South America
• warm water in the Pacific off the coast of Mexico
• cold water in the Pacific off the coast of Mexico

La Nina will cause the weather in Texas to be

• warm and wet
• cold and wet
• cold and dry
• warm and dry

What time of year do these two events occur?

• during the summer when the ocean water is warming up
• in the summer for El Nino and winter for La Nina
• during the winter around December and January
• During the fall when global temperatures are changing

The largest area of change for both events is located

• In the northern US, Canada, and Alaska
• in the southern US, and Mexico
•  in the eastern US and Canada
• it changes all geographic areas about evenly

Why are La Nina conditions especially important to areas such as Texas and California?

• because La Nina brings drought to these farming areas
• because La Nina brings needed rain to these farming areas
• because it brings rain and floods and there are many people in these areas
• La Nina does not really impact these areas like El Nino does

If you are a farmer in south Texas, when might you want to plant extra crops to make extra profits.

• during El Nino years
• during La Nina years
• in between these events because one is to dry and the other is too wet
• during both events  because both bring more rain to grow additional crops