How things work college course/Global warming quiz 2

The unshuffled version can serve as a pre-reading activity for the Wikipedia article, Global warming (permalink)

See Global warming quizzes for other quizzes devoted to this article. This quiz covers observed temperature changes.

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See Global warming quizzes for other quizzes devoted to this article. This quiz covers observed temperature changes.

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Global Warming quiz 2- Observed temperature changes

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 The Earth's average surface temperature rose by approximately _______ per decade over the period 1906–2005.

	7.0°C
	0.7°C
	0.07°C

2 In the twentieth century, the rate of earth's average temperature rise was closest to

	0.7 °C per decade
	0.7 °C per year
	0.7 °C per century

3 Compared with the first half of the twentieth century, the rate of earth's average temperature rise during the second (latter) half was

	half as much
	about the same
	twice as much

4 Compared with the second half of the twentieth century, the rate of earth's average temperature rise during the first half was

	twice as much
	half as much
	about the same

5 The urban heat island effect refers to the fact that urban areas tend to be hotter than rural areas. The urban heat island effect is estimated to account for approximately _____ of the temperature rise over the past century.

	0%
	30%
	0.3%
	3%

6 Proxy temperatures measurements are defined as indirect inferences gathered from ice cores, tree rings, and so forth

	true
	false

7 Proxy temperatures measurements are defined as measurements made using measurements from space.

	true
	false

8 The Reconstructed Temperature (0-2000 AD) plot in "Observed Temperature Changes" shows temperature measurements. The solid black line represents

	tree proxy measurements
	thermometer measurements
	the Little Ice Age
	the Medieval Warming Period
	a 10 year average

9 The Reconstructed Temperature (0-2000 AD) plot in "Observed Temperature Changes" shows temperature measurements, as well as what curious feature? (See also Divergence problem)

	the Little Ice Age being less prominent than the Medieval Warming period
	a divergence between the tree and pollen proxy measurements
	a tiny gap at the end of the proxy measurements
	the fact that the different proxy measurements deviate considerably from the average of all proxy measurements

10 A rise in the sea level is associated with global warming because

	ice and snow melts
	both of these are true
	water tends to expand as it warms

11 What happens when water is heated?

	it expands at temperatures below 3.98°C and contracts above 3.98°C
	it expands at temperatures above 3.98°C and contracts below 3.98°C
	it absorbs CO2

12 No direct method exists that permits an independent measurement of the heat content of the oceans, other than the fact that the air is warming

	true
	false

13 Ocean temperatures are increasing more slowly than land temperatures because oceans have more heat capacity and because evaporation cools the water.

	true
	false

14 Ocean temperatures are increasing more slowly than land temperatures because the oceans are absorbing less heat energy from the sun

	true
	false