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120 C HAPTE R 2 I INTEGERS AND INTRODUCTION TO VARIABLES
Objective Reading Bar Graphs Containing Integers
The bar graph below shows the average temperature (in degrees Fahrenheit) of the
eight planets, excluding the newly classified “dwarf planet,” Pluto. Notice that a nega-
tive temperature is illustrated by a bar below the horizontal line representing 0°F,and a
positive temperature is illustrated by a bar above the horizontal line representing 0°F.
Average Surface Temperature of Planets*
1200
1000
867
800
Degrees Fahrenheit 400 0 330 59
600
200
200
400 81 162 218 323 330
600
800
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
Planet
Source: The World Almanac, 2009
* For some planets, the temperature given is the temperature where the atmospheric pressure equals 1 Earth atmosphere.
PRACTICE 8 Example 8 Which planet has the lowest average temperature?
Which planet has the highest
average temperature? What is Solution: The planet with the lowest average temperature is the one that
this temperature? corresponds to the bar that extends the furthest in the negative direction
(downward). Neptune has the lowest average temperature of -330°F.
Work Practice 8
Copyright 2012 Pearson Education, Inc.
Answer
8. Venus; 867°F
