Tuesday, May 3, 2016

Geography Skills & Techniques - Reading Climate Graphs (Climograph)

(Adapted from http://www.bbc.co.uk/schools/gcsebitesize/geography/geographical_skills/graphs_rev4.shtml)

Climate graphs are a combination of a bar graph and a line graph
Temperature is shown on a line graph, with the figures being shown on the right side of the graph. Rainfall is shown by a bar graph, with the figures being shown down the left side of the graph.

The climate graph below shows average annual rainfall and temperature throughout the year for a particular area.

Interpreting climate graphs
In the exam you may be asked to look at the information in the graph and describe the area's climate.

  1. Look for patterns in the temperature data
    • Is the temperature the same all year round? If it is different, how many seasons does the location experience?
    • Which season is the warmest? Is it warm (10 to 20°C), hot (20 to 30°C) or very hot (above 30°C)?
    • Which season is the coolest? Is it mild (0 to 10°C), cold (-10 to 0°C) or very cold (below -10°C)?
    • What is the range of temperature? (Subtract the minimum temperature from the maximum temperature).

  2. Look for patterns in the rainfall data
    • Does the rainfall occur all year round?
    • What is the pattern of the rainfall? Check which season(s) is/are drier or wetter than others.
    • What is the total annual rainfall? Add each month's total together to get the annual total.
    • Then put the rainfall and temperature information together - what does it tell you about this area?

  3. Describe the patterns in temperature and rainfall, including how they relate to each other. You now have a description of the climate.
    • Now look again at the climate graph above. What can you deduce about the climate?

Geography Exam Techniques - How You Should Answer The Different Types Of Questions

Hi Everyone!

You will be sitting for your geography examination papers shortly, here are some exam tips that might be able to help all of you :)

UNDERSTANDING THE QUESTIONS
Here are some words that are commonly used in examination questions. Do you know exactly what the questions require you to do?
  • Compare / Contrast - identify and write down the things that are the same and are different between the features or places in the question.
  • Complete - you might be asked to finish off a diagram, map or graph.
  • Define - describe or explain the meaning of something.
  • Describe - write down things about what is shown on a map, table or graph. Say what you see in detail and quote the data.
  • Discuss - usually requires a longer answer as you are describing and giving reasons or explaining arguments for or against.
  • Do you agree - You are being asked to make a choice between the given answers/statement. Make a balanced argument by providing both the 'good' and 'bad' of the story.
  • Draw / Annotate - you might be asked to draw a sketch or diagram with labels to explain (e.g. the formation of a feature)
  • Explain (Account for) / Justify / Give a reason / Give detailed reasons / Suggest reasons / - give reasons for the location / appearance of a feature/ processes involved in the formation of a phenomenon
  • Give your views - you might be asked to say what you think or what another person or group might think.
  • Identify - name, locate, recognize or select a particular feature or features from a map, photograph or diagram.
  • Locate - write down where a feature or place is.
  • Name, state or list - write down accurate details or information.
  • Study / Look at - look carefully at a map, diagram, sketch, table and think about what it shows.
  • Using map evidence - you must give a 4 figure grid reference or 6 figure grid reference, and / or mention a place, name or feature taken from the map.
  • With reference to (or refer to) - examples that you have studied - you need to give detailed and specific information about the case study when explain the reasons for a particular answer.
  • With the help of or using the information provided - be sure to use and mention examples from the information (e.g. tables, graphs) in the paper to explain your answer.
How Are the Different Types Of Question Marked? 
There are two different types of questions in terms of the way your exam is marked
  • Questions worth 1-3 marks are marked per correct point, so the more correct points you make the higher your mark will be
Example: Describe the climate of the given country [4] 
(To earn the full 4 marks, provide one point/observation for each mark)
•The amount of rainfall received each month is consistently low throughout the year, between 40 to 70mm.
•The annual rainfall is 700mm.
•The mean daily temperature range is 10°C.
•Highest recorded mean daily maximum and minimum temperatures were in July, while the lowest recorded were in January.
  • Questions worth 4-8 marks will require longer answers! These answers are marked according to the 'level of response' that you give to the question. The examiner must first decide which level your answer falls into and then award you a mark within this level. If you do not meet the requirements of the higher level, the examiner cannot award you those marks. The higher your level, the higher your mark will be
Level 1
• Basic Knowledge of basic information 
• Simple understanding 
• Few links; limited detail; uses a limited range of specialist terms 
• Limited evidence of sentence structure 
• Frequent spelling, punctuation and grammatical errors  

Level 2: 
• Clear Knowledge of accurate information
• Clear understanding
• Answers have some linkages; occasional detail/exemplar; uses some specialist or geographical  terms where appropriate
• Clear evidence of sentence structure
• Some spelling, punctuation and grammatical errors

Level 3: 
• Detailed Knowledge of accurate information appropriately contextualised and/or at correct scale
• Detailed understanding, supported by relevant evidence and exemplars
• Well organised, demonstrating detailed linkages and the interrelationships between factors
• Range of ideas in logical form; uses a range of specialist terms where appropriate
• Well-structured response with effective use of sentences
• Few spelling, punctuation and grammatical errors

 Note: Your answer does not have to be perfect to score full marks. In fact, the mark scheme says that 'a perfect answer is not usually expected, even for full marks'. If you look at how many marks are available for the question this gives you some idea of how much you have to write and what to include. 

For example, you will have to include more detail for a 4 mark question than for a 2 mark question. For 4 mark questions, you will always have to develop/explain each point you make (usually 2) For 6 mark questions, it would be sensible to make 3 relevant points and give 3 good explanations to achieve full marks

Don’t include too many points as you will not explain them in enough detail. Use case studies or examples to back up the theory behind your answer. Mention facts, statistics, names and places as this will only show that you have detailed knowledge (level 3). Use words like because, as well as and therefore to highlight you are developing your points fully.

Other General Tips and Advice
  • Always try to use geographical words, concepts - e.g. Subduction, Directions (i.e. North, South, East, West), 
  • When asked to describe graphs:
  • mention any changes to the line (rising, falling, level) and how quickly these changes take place (slowly rising, falling quickly, stayed level for some years)
    With a Bar or Pie chart compare the size of the different bars or sectors and mention the relative importance of each (e.g. housing takes up 60% of the area)
  • Draw large, clearly labelled diagrams when asked to do so
  • Spend more time answering questions with more marks, if you are unsure, MOVE ON and come back to the question later!
  • When answering evaluative questions (i.e. Explain why... Discuss the advantages of....) Use the P.E.E.L format to structure your answer (i.e. Point, Explanation, Evidence, Link)
Example: Explain two factors that could affect weather in the 2 locations [6]


Latitude (Factor 1)

•Canberra is located at 35.31°S
•Gold Coast is located at 28.02°S

The weather is generally warmer in Gold Coast than at Canberra due to its latitude (Point)  
The can be seen from their latitudes which is 28.02 for Gold Coast and 35.31 for Canberra. (Evidence)
This could be due to the higher angle of incidence at Gold Coast, where the sun’s energy is concentrated over a smaller area, resulting in higher temperatures. (Explanation)
Therefore, because Gold Coast is closer to Equator where there is more concentrated sun energy, it leads to a warmer weather due to high temperatures (Link)

Distance from Sea (Factor 2)
•Canberra is located further inland
•Gold Coast is located near the coast

There is a difference in temperature range between the two locations due to their distance from the sea. (Point)
This can be seen in the figure where Gold Coast is located near to the sea in comparison to Canberra which is further inland. (Evidence)
Due to the maritime effect, the sea gains and loses heat slower than land, therefore temperatures may be cooler in the day and warmer in the night. This can be seen from the small temperature range of 8 °C between the highest and lowest temperature. (Explanation)
As a result of temperature range differences, the weather conditions are relatively constant in Gold Coast as compared to Canberra which fluctuates more. (Link)

Alright, that's all I have to share. 

Best of luck and may the force be with ALL of you ALWAYS!

Monday, May 2, 2016

Variable Weather & Changing Climate KQ1 - Rainfall & Monsoon Winds

Rainfall or Precipitation refers to water in any form that falls from the atmosphere to the surface of the earth.

Precipitation types include


  • Hail (balls of ice)
  • Snow (white or translucent ice crystals)
  • Sleet (mixture of rain and snow)
The main form of precipitation in the tropics (in which Singapore is located in), is rain. It is measured in millimeters (mm) using a rain gauge.



Areas with rainfall above 1,500mm are classified as having high rainfall.
Areas with rainfall below 250mm are classified as having low rainfall.

Rainfall is the result of air instability, which is the tendency of a parcel of air to rise (unstable state). This air parcel is heated, expand and rise as a result of becoming less dense than the surrounding air. 

Two Main Types of Rain
  1. Convectional
  2. Relief
Convectional Rain (often associated with lightning and thunder and generally lasts only for a short time but brings intense rainfall over an area, Most common in Singapore)

Relief Rain (also known as orographic rain occurs when warm, moist air is forced to rise over landforms such as a mountain range. The side of the mountain where moist, warm air from the sea is blown by the prevailing wind is called the windward side, while the other is called the leeward side which is usually dry as most of the moisture has fallen on the windward side).

Wind travels from an area of high to low pressure. They also also affected by the earth's rotation, also known as the Coriolis Effect. This effect causes the bending or deflection of winds, to the right in the northern hemisphere and left in the southern hemisphere. It is strongest near the north and south poles, while weaker in the tropics (negligent at the Equator). 


Monsoon Winds are regional wind patterns that reverse direction seasonally. This brings about seasonal changes in precipitation in different areas with the occurrence of monsoons, which may lead to wet or dry seasons.

Click on the picture to see the Monsoon Animation and better understand the phenomenon
https://www.rgs.org/webcasts/activities/monsoonindia.html

Monsoon occur in a number of locations around the world, with the major monsoons affecting Asia and Australia. Singapore commonly experiences high rainfall in the month of December because of the north-east monsoon.

North-East Monsoon (10 to 2)


The North-East monsoon takes place between the months of October (10) to February (2) due to a difference in pressure between the northern and southern hemispheres.
  • During this period of time, it is summer in the southern hemisphere (forming an area of low pressure in Australia) and winter in the northern hemisphere  (forming an area of high pressure in the Indian sub-continent and Central Asia).
  • Dry cold air moves from the Indian sub-continent and Central Asia to Australia as the north-west monsoon winds. 
  • These winds change direction to north-east as it crosses the Equator, where the Coriolis effect deflects the winds to the left. 
  • These winds warm up, picks up moisture as it travels across the Indian Ocean and brings heavy rain to Australia.
South-West Monsoon (6 to 9)

The South-West monsoon takes place between June (6) to September (9) due to a difference in pressure between the northern and southern hemisphere.
  • During this period of time, it is summer in the northern hemisphere (forming an area of low pressure in the Indian sub-continent and Central Asia) and winter in the southern hemisphere (forming an area of high pressure in Australia).
  • Dry cold air moves from Australia to the Indian sub-continent as the south-east monsoon winds. 
  • These winds change direction to south-west as it crosses the Equator, where the Coriolis effect deflects the winds to the right. 
  • These winds warm up, picks up moisture as it travels across the Indian Ocean and brings heavy rain to the Indian sub-continent.