The amount of carbon dioxide in the air is decreasing.
True

False

Which of the following would be useful in determining what past climates were like?

barometer

incubator

digital thermometer

ice cores
QUESTION 7
Which of the following is not a method used today to measure the worlds oceans?
sonar
lead weights on ropes
radar altimetry
2 points

QUESTION 8

A volcanic explosion can send smoke and dust many miles into the atmosphere.

Still, volcanic eruptions never change the climate.

True

False

QUESTION 9

Where on Earth are the warmest waters?

temperature is not something measured from large bodies of water

tropics

poles

in the Great Lakes

QUESTION 10
The last ice age ended 235 years ago.
True

False

QUESTION 11

Differences in help drive the flow of ocean water.

temperature

humidity

the number of fish in an area

polarity

2 points

QUESTION 12

Which of the following is not a greenhouse gas.

water vapor

carbon dioxide

methane

osmium

2 points

QUESTION 13

El Niño causes what type of change in the ocean water off the Pacific Coast?

subduction zones

short term warming

sinking of land masses

long term cooling