Objectives: 1. To discuss lesson plans for the current term, and a revision schedule for the summer exam. 2. To collect Easter assignments and return exam results. 3. To introduce students to weathering.

 Textbook, page 103, questions 1 & 2. Question 1: (i) Name the type of weathering shown in the diagrams. (ii) Explain how this type of weathering occurs. Question 2: Explain why freeze-thaw (frost shattering) is more likely to occur on mountains rather than on lowland.

 13 th April – 19 th May: 18 lessons.  25 th – 29 th May: Summer exams.

April 13 th – Introduction to weathering. 14 th – Chemical weathering. 14 th – Surface features. 20 th – Underground features. 21 st – The Burren (Part 1). 21 st – The Burren (Part 2). 27 th – Exam. 28 th – Introduction to maps. 28 th – Scale and the national grid.

May 4 th – Four figure grid references. 5 th – Six figure grid references. 5 th – Measuring distance. 11 th – Map symbols. 12 th – Calculating area. 12 th – Direction. 18 th – Height and slope. 19 th – Cross section. 19 th – Sketch map.

 Week One: 13 th – 17 th April Revise chapter one. Read pages 1 – 18.  Week Two: 20 th – 24 th April Revise chapter two. Read pages 26 – 42.  Week Three: 27 th April – 1 st May Revise chapter three. Read pages 48 – 60.

 Week Four: 4 th – 8 th May Revise chapter four. Read pages 65 – 75.  Week Five: 11 th – 15 th May Revise chapters five & six. Read pages 82 – 88 & 93 – 99.  Week Six: 18 th May – 22 nd Revise chapter seven. Read pages 105 – 113.

 Please take out your essays. These will be collected now, and returned as soon as possible.  A quick note on your exam: 2 As 1 B 7 Cs 8 Ds 2 Fs  In general, students showed a good knowledge of the formation and uses of rock; however, many answers were too concise and did not include the level of detail that was being sought.

What is denudation?  This word derives from the verb ‘to denude’ which means ‘to strip’ or ‘make bare.’ refers to the combination of processes that are responsible for wearing away the rock and soil of Earth’s crust.  In Geography, this term refers to the combination of processes that are responsible for wearing away the rock and soil of Earth’s crust.  Earth’s surface is shaped by denudation. What are the processes involved in denudation?  Weathering (Mechanical & Chemical).  Erosion.

 Weathering refers to the breakdown of rock in locations where it is exposed to the weather.  Once the rock has been broken down, materials remain on site, they are not transported/ moved.  There are two kinds of weathering – mechanical and chemical.

 Erosion refers to the breakdown of rock and the removal of rock particles.  Erosion can be caused by moving air (wind), moving water (rivers & seas), and moving ice (glaciers).  After rock materials have been broken down, they are transported and later deposited/dropped.

 Some forms of mechanical weathering are linked to frequent changes in temperature, including freeze-thaw action.  This process leads to the breakdown of rock into smaller pieces.  See textbook, page 94.

 This frequently occurs in upland areas where there is plenty of precipitation (rain, sleet, snow, etc.) and temperatures regularly rise above, and fall below, freezing point (0°C).

 During the day, water enters the cracks in rock.  At night, temperatures can fall below freezing point. When this happens, the water that has entered the cracks in rock freezes and expands by 10%, putting pressure on the rock.  This process continues over time, causing pieces of rock to break off.  This rock, known as scree, usually gathers at the bottom of slopes.