Evidence of Climate Change

When does the record of global ocean and surface temperatures start?

• 1860

• 1880

• 1890

• 1905

How many of the warmest years on record have occurred since 2000?

• 15

• 17

• 19

• 21

In 1850, 150 glaciers were observed in Glacier National Park, Montana and the same number in 1910 when the park was established. How many were left by 2010?

• 25

• 35

• 45

• 55

How much of the global ice store is in the Antarctica and Greenland ice sheets?

• 72%

• 86%

• 91%

• 97%

How much does polar ice melt contribute annually to sea level rise?

• 1 mm

• 3 mm

• 4 mm

• 6 mm

How much has spring snow cover declined by per decade since 1966 in the northern hemisphere?

• 1%

• 2%

• 3%

• 4%

With an increase in population growth and technological advances, we are now seeing this causing an increase in environmental change. What do we call this new epoch?

(a)  

Tree rings are used to reconstruct past climates. How does this work?

• A thicker ring indicates more growth and therefore warmer temperatures.

• A thicker ring indicates more growth and therefore colder temperatures.

• A thinner ring shows that the temperatures must have been a lot warmer that year.

• It is impossible to tell the temperature of the year by looking at the rings.

What is the albedo rate of snow?

• 50-60%

• 70-80%

• 80-90%

• 40%

What is the most important greenhouse gas?

• Carbon Dioxide

• Methane

• Water Vapour

• Nitrous Oxide