LESSON 12.9 SkillBuilder: Calculating distance using scale
What does it mean to calculate distance using scale? Calculating distance using scale involves working out the actual distance from one place to another using a map. The scale on a map allows you to convert distance on a map or photograph to distance in the real world — what it represents on Earth’s surface. A linear scale is the easiest to use, but sometimes the distance being measured between places is not straight.
LESSON 12.10 SkillBuilder: Drawing simple cross-sections
What are cross-sections? A cross-section is a side-on, or cut-away, view of the land as if it had been sliced through by a knife. It is like taking a vertical slice of the landscape and looking at it side-on. Cross-sections provide us with an idea of the shape of the land. We can use contour lines on topographic maps to draw a cross-section between any two points. Cross-sections also indicate heights at a range of points.
LESSON 12.11 SkillBuilder: Interpreting an aerial photo
What are aerial photos? Aerial photographs are those that are taken from above the Earth from an aircraft. Aerial photos, either oblique or vertical, record how a place looks at a particular moment in time. Greater detail of a place can be captured than in a photo taken from ground level. Some aerial photos are also satellite compilations; that is, created by a number of images transmitted from the satellite.
LESSON 12.12 SkillBuilder: Understanding thematic maps
What is a thematic map? A thematic map is a map drawn to show one aspect; that is, one theme. For example, a map may show the location of vegetation types, hazards or weather. Parts of the theme are given different colours or, if only one idea is conveyed, symbols may show location.
TOPIC12 Geographical concepts and skills 275
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