Name
Date
15 Table: Wacky Weight Watchers
Many people know that it’s much easier to jump on the moon because it
has lower gravity than Earth, so you weigh less. But have you ever
wondered what would happen if you could travel to the other planets in
the solar system? A planet’s size determines how heavy an object on its
surface will be. Check out the table below to see how heavy different
objects would be on different planets. Then answer the questions.
Weights of Objects Across the Solar System (in pounds)
Object
Planet
Baseball Bat Watermelon
12
Standard
Poodle
Hippopotamus
225
8,000
20.7
85
3,024
10.8
49.8
204
7,256
0.9
4.5
20.7
Jupiter
5.9
28.3
Saturn
2.6
12.7
Uranus
2.2
Neptune
Pluto
Earth
2.5
Mercury
0.9
4.5
Venus
2.2
Mars
55
Sofa
84.8
3,016
531.9
18,912
58.5
239.4
8,512
10.6
48.8
200
7,112
2.8
13.5
61.8
253.1
9,000
0.1
0.8
3.6
15
130
536
Source: World Almanac and Book of Facts, 2004
24
Charts, Tables & Graphs © Michael Priestley, Scholastic Teaching Resources
Name
Date
Wacky Weight Watchers (continued)
1. On which planet are watermelons and sofas heaviest?
2. On which planet are poodles and hippos lightest?
3. How much does a baseball bat weigh on Venus?
On Neptune?
4. On which planet does a standard poodle weigh about 130 pounds?
5. On which planet do things weigh the closest to what they weigh on Earth?
6. On which two planets does a watermelon weigh exactly the same amount?
7.
How much less does a sofa weigh on Pluto than on Earth?
8. How much does a hippopotamus weigh on Mercury?
On Uranus?
9. Are things heavier on Venus or on Neptune?
10. What is your weight on Earth? Using the information
in the table, estimate how much you would weigh on Mars.
Charts, Tables & Graphs © Michael Priestley, Scholastic Teaching Resources
25
Name
Date
16 Tables: Feeling Sheepish
Are there more people or more animals where you live? If you live
in a city this might be hard to imagine, but in some places the livestock
far outnumber the people. Imagine if your town had more than 300
sheep per person, for example, as in the Falkland Islands. That’s a lot
of sheep’s wool for sweaters! Look at the tables below to answer the
questions on the next page.
Country
Number of Sheep
Falkland Islands
(part of the U.K.)
Human Population
Sheep per Person
717,000
2,121
338.05
New Zealand
47,144,000
3,494,300
13.49
Uruguay
22,685,000
3,116,800
7.28
Australia
120,651,000
18,114,000
6.66
Mongolia
13,719,000
2,363,000
5.81
Mauritania
5,288,000
2,217,000
2.39
Kazakhstan
33,524,000
16,963,600
1.98
470,000
266,800
1.76
Namibia
2,620,000
1,500,000
1.75
Somalia
13,500,000
9,077,000
1.45
Iceland
Now, what about in the United States? Do sheep outnumber people?
No, but the numbers of sheep and numbers of people have changed
considerably over the last 100 years or so—as you can see in the
table below.
Table 2: U.S. Populations of
Sheep and Humans (1900–2000)
Year
Number of Sheep
(in millions)
Number of People
(in millions)
1900
48.1
76.2
1920
40.7
106.0
1940
52.1
132.2
1960
33.2
179.3
1980
12.7
226.5
2000
7.0
281.4
Source: World Almanac and Book of Facts, 2004
26
Charts, Tables & Graphs © Michael Priestley, Scholastic Teaching Resources
Source: The Top 10 of Everything: 1998 (DK Publishing)
Table 1: Ten Countries Where Sheep Outnumber People (2000)
Name
Date
Feeling Sheepish (continued)
1. Which country in Table 1 has the largest number of sheep?
2. Which country in Table 1 has the smallest human population?
3. How many sheep are there per person in Mongolia?
4. How many countries listed in Table 1
have more than 10 million sheep?
5. Which countries have more than 10 sheep per person?
6. According to Table 2, how many sheep
were there in the United States in 1900?
7.
In 1920, how did the population of sheep compare with the number of people
in the United States?
8. What was the U.S. population (of humans) in 1940?
9. What has happened to the sheep and human populations in the United States
since 1900?
10. In 2000, which countries listed in Table 1 had more sheep than the United States?
Charts, Tables & Graphs © Michael Priestley, Scholastic Teaching Resources
27