Welcome to your first GCSE lesson in Geography! Please sit down quietly. On to the post-it note please write down… 1. Your name 2. Any question you have about your GCSE course in Geography
On my post-it note‌ Name: Miss Ainslie Question: e ik l u o y ld u o w t Wha to do more of in Geography?
On your second post stick note write down what you would like to do more of in Geography...
Doing group work.
Going on fieldtrips
Using computers to do work.
Making and creating posters or leaflets
Doing roll plays and using drama.
Watching DVD clips.
Please stick your post stick notes together so I can collect them in.
I will read these and answer all your questions next lesson!
What skills will I be developing? • Decision-making skills, thinking about how coastlines should be managed • Independent enquiry skills, asking your own questions and finding out the answers • Communication skills, backing up your ideas with well explained arguments You will also need to understand and consider the views of different people and stakeholders
Put the title: The Coastal Zone Now make two lists in your book using the photo below. Try to think of at least 3 for each column. Human features Physical Features
Learning Focus: What are waves and how do they work? • What: Identify the two main types of wave and learn the key terms • How: Label diagrams and compare constructive and destructive waves • Why: To begin to understand the importance of waves and the coastal zone
Who is affected by waves? How? • Property Owners • Fishermen • Surfers
Add at least 2 more of your own…
The action of waves Waves are created by wind blowing over the surface of the sea Friction is created - producing a swell in the water The water particles then rotate and the wave moves forward
Wind Wave length Crest
Swash
Wave height Trough
Backwash
Seabed
• Wave Frequency • Velocity • Fetch
Types of waves • When a wave breaks, water is washed up the beach - called swash • Then the water runs back down the beach called backwash
Backwash Swash
Whenever you see either one on the video, shout ‘SWASH’ ‘BACKWASH’! Note: Backwash isor always at right angles to the beach http://www.youtube.com/watch?v=tN42EWWTP3w
Waves can be constructive or destructive
Constructive Waves
• With a constructive wave, the swash is stronger than the backwash • With a destructive wave, the backwash is stronger than the swash.
swash>backwash Destructive Waves
backwash>swash
Constructive Waves
• Created in calm weather • Break on the shore and deposit material, building up beaches
Destructive Waves
• Created in storm conditions when the wind is powerful and has
been blowing for a long time • Occur when wave energy is high and the wave has travelled over a long fetch, tend to erode the coast
Constructive or Destructive?
Check your answers
Demonstrate: Decide whether the statements are talking about destructive or constructive waves and add them to the correct diagram • • • • •
The swash is stronger than the backwash The backwash is stronger than the swash Short wave height Tall wave height Strong swash causes a lot of material to be deposited on the beach • Strong backwash pulls sand and shingle back to the sea eroding the beach
Dorset Fieldtrip! • 14th September 2012 • £10 each • Leave school 7:30am (arrive by 7:15am) • Arrive back by 6pm • All details on the letter sent home • Bring money and forms back into school a.s.a.p.
Coastal Bingo • Write down 4 key words from those you have learnt today • If I say one you have written, cross it off and put your hand up to give its definition • The first one to get all 4 words crossed off is the winner! Constructive
Destructive
Frequency Crest
Trough
Swash Wave Height
Backwash
Fetch
Wave Length
Wave Frequency
Velocity