Grade 9 - Thinking Geographically W2L1

Grade 9 - Thinking Geographically W2L1

​Different Types of Maps

Maps ​

​By the end of this lesson you will:

​

• be able to identify different types of maps

• ​understand spatial patterns represented on maps

• ​understand all maps are selective in information

​Reference Maps

• ​The main purpose of a reference map is to show locations of many types of features (e.g. cities in relation to highways and rivers or campgrounds  in relation to parks and highways).

• Reference maps often use conventional colors and symbols to represent a great variety of topics.

Multiple Choice

A reference map is used to show locations of different features on a map. 

TRUE OR FALSE?

• True

• False

Multiple Choice

Reference Maps only use one colour at a time to represent the information you are looking for.

TRUE OR FALSE?

• False

• True

Thematic Maps

• This is also called a 'Special Purpose Map'.

• Unlike a reference map, a thematic map usually presents only one topic

• ​The map on this page is a map of Europe, but only represents the forest areas in Europe.

Multiple Choice

What makes a Thematic Map different from a Reference Map?

• A thematic map only represents one colour

• A thematic map has many topics

• A thematic maps only represents one topic

• A reference map has many topics

Multiple Choice

A thematic map can show you where different points of interest are on a map. For example, schools, malls and petrol stations.

TRUE OR FALSE?

• True

• False

Thematic Maps

• Thematic maps tell you the purpose in their title.

Thematic Maps

Poll

A thematic map has what represented on it?

• One topic in different shades

• Lots of different topics

• I don't know

​Choropleth Maps

​A choropleth map is a thematic map in which your area of research (ie population) are colored or shaded according to the range in which the statistic of interest falls.

​Choropleth Maps

A choropleth map is a kind of thematic map in which the colours or shades are not random like in the images on the previous slides but have a chromatic sequence that is proportional to what it is that you are researching on your map.

​

For example, from dark to light colours or from dense shading to light shading.

​

​See the image on the next slide as an example.

​Choropleth Map

• ​You can tell that this is a choropleth map as the colours are a graduating scale from brown to pink.

• ​The colours are not a range of different colours - that would make it more of a thematic map.

Multiple Choice

A choropleth map is a type of what other map?

• Reference map

• Thematic map

• Street map

• Google map

Multiple Choice

What makes a choropleth map easy to identify?

• It is a map of only one topic

• It has various different colours on it

• It has only one topic and shades of one colour

• It is not a reference map

Multiple Choice

What type of map is this?

• Reference Map

• Choropleth Map

• Thematic Map

​Dot Map

​¨Shows the values of one or more numeric data fields. Each dot on a dot-density map represents some amount of data.

Multiple Choice

What does a 'dot' represent on a dot map?

• I don't know

• Topics

• Colours

• Small amounts of data

​Dot Map Example

​This map represents how many people have been killed by a lightning strike in the US between 2007 and 2017.

​

​You can see by the scale how many people the dots represent.

Multiple Choice

What sort of map is this?

• Reference

• Choropleth

• Dot

• Thematic

​Isoline Map

Isoline maps help the reader to recognize patterns and relationships between the geography of an area and data that might have been collected, such as air temperature.​

Multiple Choice

This isoline map image is a representation of what type of geography?

• Physical

• Human

​Cartogram Map

​Cartogram is a map in which the geometry of regions is distorted in order to convey the information you are looking for. The area on the map will be inflated (bigger) or deflated (smaller) according to its numeric value.

​

​Look at the image on the next page of a 'world population cartogram' and in particular look at how big India is. This is because it has a big population.

Multiple Choice

A cartogram map looks strange because:

• there are very few points of reference 

• the we are not used to looking at them

• the country size is bigger or smaller depending on the data you are looking at

• the colours chosen always clash with each other