HYDROSPHERE – OS MAPWORK
This presentation is the property of its rightful owner.
Sponsored Links
1 / 8

HYDROSPHERE – OS MAPWORK Using an OS map, you should be able to describe the main PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on
  • Presentation posted in: General

HYDROSPHERE – OS MAPWORK Using an OS map, you should be able to describe the main characteristics of a river and its valley This question is not unlike the one you faced at S.G. You will be asked to describe the Physical features of a river

Download Presentation

HYDROSPHERE – OS MAPWORK Using an OS map, you should be able to describe the main

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

Using an OS map, you should be able to describe the main

characteristics of a river and its valley

This question is not unlike the one you faced at S.G.

You will be asked to describe the Physical features of a river

and perhaps its valley – do not mention bridges, settlement etc.

Remember to give grid references – marks are given for this!


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

Weak Answers:

The river starts off straight, flowing N and then swings to the W,

before going NE and then NW, NE again and then NW, N, NW and

back NE and N. The river has a lot of meanders. It flows under a

bridge at 587028 and goes through woodland at 580050.

What do you think of this answer?

1. First sentence = 1 mark. General comment on direction is enough

2. Gets two marks but could have got two for simply saying:

  • ‘The river meanders to the NW’

    3. Woodland and bridge references are irrelevant

    4. No grid reference given for meanders

    5. No mention of valley

    6. No mention of any other features


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

Strong answer:

The river meanders to the NW. An example of a meander is found at

587028. The river is roughly the same width throughout the section

and could be in its middle course. There are 2 tributaries with

confluence points at 588036 and 584040. There is an ox-bow lake at

585044. There is an embankment at 587038 suggesting that the river

is prone to flooding here. The valley has a flood plain which widens

from 500m wide in the South to 2km wide in the North. The East side

of the valley is gently sloping to over 30m whereas the West side is

steep, rising to over 70m.

What do you think of this answer?

Can you draft up a list of questions you should be aiming to

answer?


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

Can you draft up a list of questions you should be aiming to

answer?

Physical Features of River:

What course is the river in?

  • STRAIGHT OR MEANDERING?

  • DOES IT GET WIDER AS IT FLOWS DOWNSTREAM?

  • DIRECTION OF FLOW?

  • SPEED? GENTLE OR STEEP SLOPE?

    Features to note if present (give grid references)

  • Braiding, embankments, oxbow lake, meanders, waterfalls

    Tributaries

  • How many? From which direction do they come?


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

Physical Features of Valley:

Trend – E.g. North to South, East to West etc.

Shape – U-shaped or V-shaped, gorge, steepness of valley sides

Width – How wide is the valley floor? Can you measure?

Features – flood plain, interlocking spurs

Height – valley floor and valley sides

E.g. valley floor descends from 300m to 290m

valley sides rise from 100m to over 400m


Hydrosphere os mapwork using an os map you should be able to describe the main

HYDROSPHERE – OS MAPWORK

PAST PAPER QUESTION 2005

Using appropriate grid references, describe the physical

characteristics of the River Bleng and its valley from 136095

(Stockdale Head) to 102032 (where it meets the River Irt).

8 MARKS

  • Complete in groups

  • Take 10 minutes to get down as much information as possible

  • Swap with another group – add to their answer (3mins)

  • Swap again, look at the marking scheme grade the answer in front of you


Hydrosphere os mapwork using an os map you should be able to describe the main

PAST PAPER QUESTION 2007

The river Teme is in the lower section of its course between 760545

and 850522. Describe the physical characteristics of the river and

its valley in this section.

ANSWERS:

Descriptions may include the following points:

  • meanders, ox-bow lakes, tributaries, cut offs, small pools

  • broad flat floodplain, alluvium, gently sloping valley sides

  • height of land and easterly flow of river could also be credited

  • braiding

  • islands or eyots (806533)

  • river terraces.

    Up to 1 mark for specific map evidence ie grid references or

    names.

  • (Maximum 1 mark for repeated references to same feature (eg Meander/ tributaries/confluences/direction of flow etc)


Hydrosphere os mapwork using an os map you should be able to describe the main

CORE HIGHER GEOGRAHY TEXTBOOK

Answer questions 1  4 on page 72

Maps on page 73


  • Login