Question 106·Easy·Command of Evidence
Figure 1 shows the average percentage of the sky covered by clouds at 2 p.m. at three study sites.
Clouds form when water vapor in the air cools and condenses into tiny droplets. Because clouds can affect how much sunlight reaches Earth’s surface, climate scientists often track cloud cover at different locations. These measurements can be used to compare sites. For example, the prairie site had _____
Which choice most effectively uses data from Figure 1 to complete the example?
For command-of-evidence questions that reference a figure, read the exact category named in the sentence (here, the prairie site), note its value, and then compare it to the other categories mentioned. Pick the option that matches all comparisons shown by the data, not just one of them.
Hints
Find the prairie bar
Identify the bar labeled “Prairie” and note its height on the percent scale.
Compare prairie to coastal
Is the prairie bar higher or lower than the coastal bar?
Compare prairie to desert
Is the prairie bar higher or lower than the desert bar?
Step-by-step Explanation
Locate the prairie value
From Figure 1, the prairie site’s average cloud cover at 2 p.m. is about 45%.
Compare prairie to the other two sites
The coastal site is about 65% (higher than prairie), and the desert site is about 25% (lower than prairie).
Select the choice that matches both comparisons
Therefore, the prairie site had less average cloud cover than the coastal site but more than the desert site.