Hamish M. A Level Geography tutor, GCSE Geography tutor

Hamish M.

Currently unavailable: for regular students

Degree: BSc Geography (Bachelors) - Exeter University

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About me

About me:

I am currently studying BSc geography at the Univeristy of Exeter, I have just finished my second year with a 2:1 and will be focusing on advanced earth surface dynamics in my third year. My knowledge base focuses mainly on the cryosphere, river dynamics and statistical analysis, however I have a broad knowledge of all other parts of geography.

My sessions:

All of my tutor sessions will be guided by the student. At A-level and GCSE it is important to have a variety of case studies banked and memorised, the more interesting case studies are the easier it is to memorise them and understand their content. Therefore, this is what my sessions will focus on before advancing to practice exam questions and exam technique if required.

Personal statements:

Writing personal statements is much easier when you understand what the university you are applying to are looking for. I have not only produced my personal statement but have helped my younger sibling with his and aim to provide guidance on what makes an excellent personal statement.

Subjects offered

SubjectLevelMy prices
Environmental Studies A Level £20 /hr
Geography A Level £20 /hr
Geography GCSE £18 /hr

Qualifications

QualificationLevelGrade
Environmental StudiesA-LevelA*
GeographyA-LevelA*
MathsA-LevelB
General StudiesA-LevelB
Disclosure and Barring Service

CRB/DBS Standard

No

CRB/DBS Enhanced

11/03/2016

Currently unavailable: for regular students

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Questions Hamish has answered

I do not understand the concept of environmental feedbacks. Could you help explain it to me using examples?

First of all, you need to understand the difference between positive and negative feedbacks, we can then work on examples. A feedback starts with an initial perturbation/disturbance, in the case of a positive feedback the scale of the initial perturbation is amplified. On the other hand, negat...

First of all, you need to understand the difference between positive and negative feedbacks, we can then work on examples. A feedback starts with an initial perturbation/disturbance, in the case of a positive feedback the scale of the initial perturbation is amplified. On the other hand, negative feedbacks suppress the initial perturbation. 

Now for some examples. Firstly, a relatively easy positive feedback to understand relates to the ice albedo and its effect on atmospheric warming. An initial heating of the earths atmosphere could be caused by a number of natural or human phenomena (how many can you/we name?). This initial heating causes ice to melt reducing ice surface area and therefore the albedo of the earths surface. The average reflection coefficient or albedo of ice with snow is 0.9 so it reflects 90% of incoming radiation, the average albedo of open water is 0.06 so it absorbs 94% of incoming radiation (www.us-satellite.net). For this reason as ice melts, more radiation is absorbed, causing further ice melt and therefore further reduced albedo and enhanced warming.

A good example of a negative feedback is when an initial warming causes higher amounts of evaporation from water bodies such as oceans. This increases the amount of water vapour in the air and therefore clouds so can cause the initial warming perturbation to be reduced as clouds have a high albedo and reflect incoming solar radiation.

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5 months ago

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What are the two main processes of glacial erosion and how do they work?

Firstly it is important to understand what erosion is. This is when exposed rocks are broken down by water, wind or ice and the product of this is transported away in one of the aforementioned mediums. It is important that you remember to distinguish this from weathering where no transport occ...

Firstly it is important to understand what erosion is. This is when exposed rocks are broken down by water, wind or ice and the product of this is transported away in one of the aforementioned mediums. It is important that you remember to distinguish this from weathering where no transport occurs.

To understand processes of glacial erosion is important in geography as they are present from GCSE to university level! There are two main types known as plucking and abrasion. 

Plucking occurs when a glacier freezes to the substrate (probably rock or sediment) beneath it, as gravity continues to drive the glacier downslope it rips  the substrate that it has frozen to away and transports it downglacier (talk about transport processes if required). 

It is easiest to think of abrasion as a giant piece of sandpaper. Rocks and sediment entrained in the base of the glacier are dragged over the underlying bedrock and this causes the bedrock to be worn away. This is often shown by 'striations' and 'polished surfaces'.

(Can go on the give example of freeze thaw weathering and explain why it is different to help improve understanding).

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5 months ago

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