Grade 8 · Social Studies · Unit 13 of 15
Maps, Graphs & Data
Choropleth maps, scatter graphs and pyramids
What your child practises
Reading map scales and legends, choropleth maps, scatter graphs and correlation (and why correlation does not prove cause), and what population pyramids say about a country's age and growth. The data in the questions are made up for practice.
Ontario Curriculum expectation: Geography A2.3, A2.4, A3.7, B2.3, B2.4, B3.3, B3.4 · analysing and constructing maps, choropleth maps, scatter graphs, correlation and population pyramids
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
The table shows made-up data. What does it suggest about literacy rate and life expectancy?
Made-up data for five countries Country Literacy rate (%) Life expectancy (years) A 99 82 B 92 76 C 75 68 D 55 60 E 38 54 - As literacy rate rises, life expectancy tends to rise.
- There is no pattern.
- As literacy rate rises, life expectancy tends to fall.
- Both stay the same.
Show answer
As literacy rate rises, life expectancy tends to rise.
Hint: Compare the columns: higher literacy goes with longer life expectancy.
Question 2
On a map, 1 cm stands for 5 km. What is this called?
- the border
- the title
- the legend
- the scale
Show answer
the scale
Hint: A scale links map distance to real distance.
Question 3
Why do map makers include a title?
- to make the map look full
- to show distance
- to show north
- to tell the reader what the map is about
Show answer
to tell the reader what the map is about
Hint: A clear title helps readers know what the map shows.
Question 4
Which statement about correlation is correct?
- A correlation only works with maps.
- A correlation means the data is wrong.
- A correlation shows a link between two measures but does not prove that one causes the other.
- A correlation always proves a cause.
Show answer
A correlation shows a link between two measures but does not prove that one causes the other.
Hint: Another factor may influence both.
Question 5
A scatter graph shows the points falling from left to right. What does this show?
- a negative correlation: as one value rises, the other tends to fall
- no data
- a positive correlation
- a perfect circle
Show answer
a negative correlation: as one value rises, the other tends to fall
Hint: A line of best fit would slope downward.
Question 6
On a map, 1 cm represents 2 km. Two towns are 6 cm apart on the map. How far apart are they in real life, in km?
answer boxkm
Show answer
12 km
Hint: Multiply the map distance by the scale.