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Unit notes and practice questions

Grade 12 Geography unit 8: Geographical enquiry and map making

Everything here is for unit 8 of the Grade 12 Geography textbook: what the chapter covers, the short notes, practice questions with their answers, and the lesson video where one exists.

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Practice questions on unit 8

What unit 8 covers

  1. 1.Fundamentals of Research in Geography
  2. 2.GIS Data and Map Making Using GIS

Short notes for unit 8

The cards filed under this chapter on the Grade 12 Geography page. Open one at a time.

MethodGrouping LogicKey Characteristic
Natural Breaks (Jenks)Maximizes within class similarity and between class differencesDefault option in most GIS software
Equal IntervalDivides data range into equal size sub rangesSimple to understand but distorts highly skewed data
QuantilePlaces an equal number of observations in each classUseful for percentile and ranking comparisons
Standard DeviationDivides classes based on distance from the statistical meanShows how much values deviate from the average

When you use it

Use this when selecting or interpreting statistical grouping methods for choropleth mapping in GIS.

Watch out

Equal interval classification distorts data visualization when values are heavily skewed across geographic units.

Drafted from Grade 12 Geography, page 217 onwards, then checked twice before it went up

OperationData InputMain Function
Attribute QueryNon spatial tabular databaseSelects features based on logical table conditions
Spatial QueryPositional and coordinate dataSelects features based on geographic location and distance
Proximity (Buffering)Vector points, lines, or polygonsGenerates boundary zones of influence around features
Overlay AnalysisMultiple overlapping thematic layersCombines geometry and attributes to create new layers

When you use it

Use this when distinguishing between non generative querying and new data generating spatial operations in GIS.

Watch out

Attribute queries only evaluate table records without geographic positions, while spatial queries require geographic coordinates.

Drafted from Grade 12 Geography, page 217 onwards, then checked twice before it went up

ScaleOrderedMeaningful DistanceAbsolute ZeroExample
NominalNoNoNoJersey numbers, land use type
OrdinalYesNoNoEducational attainment ranking
IntervalYesYesNoTemperature in Fahrenheit
RatioYesYesYesWeight, population count

When you use it

Use this when identifying the appropriate mathematical measurement scale for geographic attributes.

Watch out

Interval scales allow meaningful differences and averages, but do not have an absolute zero so ratios cannot be calculated.

Drafted from Grade 12 Geography, page 217 onwards, then checked twice before it went up

Practice questions on unit 8

10 multiple-choice questions written against this chapter, each with its answer and the reason. Try one before you open the answer.

Question 1

Which basic component of a research project answers the question: what is being studied?

  1. A.Subject matter
  2. B.Methodology
  3. C.Philosophical bases
  4. D.Research design
Show the answer and why

Answer: A Subject matter

Why

According to the textbook, any research project has three main components: the subject matter (what is being studied), the methodology or approach (how it is being studied), and the philosophical bases.

Question 2

Which of the following is categorized as a primary data source in geographical research?

  1. A.A statistical report published by a government ministry
  2. B.Focus group discussions conducted directly by the researcher
  3. C.An article published in an international geography journal
  4. D.A historical diary stored in a public library
Show the answer and why

Answer: B Focus group discussions conducted directly by the researcher

Why

Primary data is firsthand, original data collected by the researcher for a specific project. Examples include surveys, interviews, field observations, and focus group discussions.

Question 3

In which level of measurement is there always a meaningful absolute zero?

  1. A.Nominal
  2. B.Ordinal
  3. C.Interval
  4. D.Ratio
Show the answer and why

Answer: D Ratio

Why

In ratio measurement, an absolute zero exists, which allows researchers to construct meaningful fractions, ratios, and counts.

Question 4

Which three basic elements form the core technical structure of a GIS application?

  1. A.Digital Data, Computer Hardware, and Computer Software
  2. B.Topographic Maps, Aerial Photos, and Satellite Dishes
  3. C.Questionnaires, Interviews, and Field Observations
  4. D.Printers, Plotters, and Drawing Tables
Show the answer and why

Answer: A Digital Data, Computer Hardware, and Computer Software

Why

A GIS system relies on Digital Data (geographical information), Computer Hardware (for storage and processing), and Computer Software (GIS applications that run programs).

Question 5

A student in Hawassa collects numerical temperature readings across different altitudes to test and verify an existing climatic theory using statistical methods. Which research approach is the student using?

  1. A.Qualitative approach using inductive reasoning
  2. B.Quantitative approach using deductive reasoning
  3. C.Narrative approach using verbal coding
  4. D.Historical approach using subjective synthesis
Show the answer and why

Answer: B Quantitative approach using deductive reasoning

Why

A quantitative approach produces discrete numerical data and relies on statistical, deductive analysis to verify established geographical theories and relationships between measurable variables.

Question 6

Which of the following is classified as a non-probability sampling technique?

  1. A.Stratified sampling
  2. B.Systematic sampling
  3. C.Clustered sampling
  4. D.Snowball sampling
Show the answer and why

Answer: D Snowball sampling

Why

Non-probability sampling methods include convenience, judgment, quota, and snowball sampling. In contrast, stratified, systematic, clustered, and simple random sampling are probability methods.

Question 7

Which choropleth map classification method places an equal number of observation units or ordered cases into each class?

  1. A.Quantile method
  2. B.Equal interval method
  3. C.Standard deviation method
  4. D.Natural break method
Show the answer and why

Answer: A Quantile method

Why

A quantile map divides data according to percentiles so that an equal number of ordered cases (units of observation) is placed into every class.

Question 8

An urban planner in Addis Ababa opens a parcel database and selects all parcels that have the land use code for commercial by using the attribute table alone, without using spatial coordinates. What type of query is this?

  1. A.Spatial query
  2. B.Attribute query
  3. C.Proximity query
  4. D.Overlay query
Show the answer and why

Answer: B Attribute query

Why

An attribute query selects information by asking logical questions from an attribute table without requiring geographic coordinates or spatial map relationships.

Question 9

Which motivation for conducting geographic research specifically aims at forecasting future events and behaviors resulting from a phenomenon?

  1. A.Exploration
  2. B.Explanation
  3. C.Description
  4. D.Prediction
Show the answer and why

Answer: D Prediction

Why

Prediction involves predicting future outcomes for a phenomenon and forecasting the events and behaviors that result from that phenomenon.

Question 10

Which group of maps is identified in the textbook as the main examples for portraying feature attribute values as a volume (statistical surface)?

  1. A.Dot maps, Choropleth maps, and Isarithm maps
  2. B.Topographic maps, Cadastral maps, and Sketch maps
  3. C.Flow maps, Network maps, and Mental maps
  4. D.Geological maps, Soil maps, and Land use maps
Show the answer and why

Answer: A Dot maps, Choropleth maps, and Isarithm maps

Why

According to the textbook, dot maps, choropleth maps, and isarithm maps are the primary cartographic techniques used to portray continuous statistical surfaces or volume distributions.

The app holds 12 questions on this unit, marked as you go. These are the first 10.

The textbook pages for unit 8

The whole Grade 12 Geography textbook, free as a PDF.

Ministry of Education edition, English, 266 pages

Download the PDF

All Grade 12 Geography short notes

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