L5 - Skill Across The UK Flashcards Preview

1GB2 Topic 4a UK Changing Physical Landscape. GCSE Geography. > L5 - Skill Across The UK > Flashcards

Flashcards in L5 - Skill Across The UK Deck (11)
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What two features of the landscape are contour lines used to show?

- Height ( each contour line is at a particular height)
- Slopes (contour lines close together show steep land & widely spaced contours mean gently sloping land)


What are contour lines shown as on OS maps?

- thin orange or brown lines with numbers on them to show you the height above sea level of any point on the line


What do contour lines join?

- they join points of equal height together


What do smaller contour circles on OS maps show?

- smaller circles show a summit or basin but the inside of a contour circle is normally higher ground


What do very few or no contour lines show?

- flat areas like river valleys and the sea


When are contours on top of each other?

- they are only ever on top of one another if a vertical cave or cliff is present


What does a 'V' or 'U' shape pointing downhill denote?

- the spur of a hill


What do contours bunched together on either side of lower, more evenly spaced contours show?

- they show a valley or col ( lowest point of a ridge or saddle) between two areas of high ground


What does the geology of England mainly consist of ?

- sedimentary rocks
- youngest rocks are found in the South East around London, progressing in age in a north westerly direction
- To the N and W of the Tees - Exe line, most of the rocks are older
- More resistant igneous and metamorphic rocks are found here
- There are more faults, where upland areas were lifted by tectonic activity


What rocks are found to the S and E of the Tees - Exe line?

- Rocks are much younger
- There are weaker sedimentary rocks, which erode easily
- Limestone is also found here ( much younger and less resistant that Carboniferous limestone)


What do upland areas of the UK consist of?

- they consist of resistant igneous, metamorphic and some sedimentary rocks
- low land areas of the UK generally consist of younger and less resistant sedimentary rocks