Weather, Climate, and Ecological Footprints

A reasonable amount of time for determining a change in climate would be a...

• 1 day

• 3 months

• 1 year

• 30 years

Average weather over a long period of time

• seasons

• temperature

• climate

• global green house

Which of these best describes climate rather than weather?

• Wind speed is changing as a storm moves through an area.

• The temperature is decreasing in a slow-moving cold front.

• Annual high temperatuers in the summer have increased over many decades.

• The rainfall during one year was greater than the rainfall during the next year.

Human activities are __________________ the levels of the greenhouse gases in the atmosphere.

• Increasing

• Decreasing

• maintaining

• fluctuating

Scientists classify climates according to two main factors: ______________- and _____________________-.

• temperature and pressure

• temperature and precipitation

• pressure and precipitation

• location and animals

The main human activity that releases greenhouse gases is

• using public transportation and there by reduce the affects of greenhouse gases.

• burning fossil fuels

• texting on cellphones

• eating meat

Which of the following is the best conclusion that can be made from this graph?

• atmospheric carbon dioxide levels have been decreasing since 1960
• Hawaii has a lot of carbon dioxide
• humans have been working hard to decrease carbon dioxide levels
• atmospheric carbon dioxide levels have increased steadily since 1960

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

• water
• gases
• heat
• water vapor

How does the concentration of carbon dioxide in the atmosphere affect climate?

• As carbon dioxide concentrations increase, temperatures increase
• As carbon dioxide concentration increase, temperatures decrease.
• Carbon dioxide concentrations have no affect on climate
• As carbon dioxide concentrations increase, temperatures become more random.

The graph shows changes in carbon dioxide

(CO2) concentrations and surface temperatures

on Earth from the years 1880 to 2000.

Why do carbon dioxide concentrations and

surface temperatures show the relationship seen

in the graph?

• because lower carbon dioxide levels mean more

  heat is retained in Earth's atmosphere

• because higher carbon dioxide levels mean

  more heat is retained in Earth's atmosphere

• because lower carbon dioxide levels mean less

  heat is retained in Earth's atmosphere

• because higher carbon dioxide levels mean less

  heat is retained in Earth's atmosphere