TASK 1: Compare and contrast the climate of the two places below. Include data in your answer.
CLIMATE AND RELIEF OF EXTREME ENVIRONMENTS
TASK 2: Use the following resources to research and summarise the climate and relief of different extreme environments:
MYSTERY IMAGE
TASK 3: What has happened to the vehicle in the photo below?
FLASH FLOODS
An arid area receives less than 250 mm of rain per year.
Most deserts get what little precipitation they do receive in a few, heavy rainfalls, rather than many light rains spread out over the course of the year. This leads to seasonal lakes and rivers which may last a few months, or even only a few days. Dry river beds are a common sight in many deserts, and are called wadis in some African and Middle Eastern deserts.
In order to understand how a flash flood like the one above can happen in hot, arid areas, we must first understand how drainage basins work.
TASK 3: Study the diagram. Identify the processes which would be affected by:
extreme high temperatures
lack of vegetation cover
CAUSES OF FLASH FLOODS IN ARID AREAS
TASK 4: Draw a labelled diagram including all of the information below
Flooding occurs when rainfall intensity exceeds infiltration capacity generating surface runoff/overland flow leading to flooding.
Causes of flooding in deserts:
summer convection rainfall bringing high amounts of precipitation
unvegetated desert surfaces reduce interception and infiltration, increasing overland flow
high concentrations of water in wadis, gullies or channels
presence of desert crusts (duricrusts) and other barriers to infiltration (rocks in desert pavement etc).
practice exam question
Describe the climatic characteristics of either periglacial or glacial environments. [4 marks]
Mark Scheme
Key aspects will be temperature, temperature range, seasonality, precipitation.
Award 1 mark for each valid statement, supported by some quantification or development.