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Class expectations     Q&A, blog, textbook              1
The big picture- text pg 207LESSON                   TOPICS  1              AGENTS SHAPING COASTS  2               COASTAL...
Wave         Waves                      energy                       Wave                     movementCoastsare        Tid...
Todays objective• Describe the factors affecting  wave energy and the types  of wave movement• Describe and account for th...
Q: What is a coast vs a shore?               Coas                      t      Sho          r       e      5
Waves• Wind energy on the  water surface• Water particles on  top moves, but  below doesnt• Creates circular  motion• Seaw...
Wave          Waves                          energy Suggest factors that determinesthe different size of the 2 waves?     ...
Text pg  Waves         Wave energy      186 Windduration                      Fetch       Wind speed                    8
Wavemovement       Swash / backwashWatch thevideo anddecide whichis a swashand abackwash?               9
Wavemovement         Refer to the vide                 and text pg 187,    Elab orat e on the  diffe renc es betw een  swa...
Wave movement                Swash         Backwash               ForwardFormation     movement of   Pull of gravity      ...
Constructive orWave types           Destructive waves?                        Small waves                        grinding ...
How to deter mine the types ofwaves?height and • Wave                      Text pg                                188  len...
Deposits sediments        14
Erodes coast +transport sediments       away         15
Activity- pair work:O level Geog Elect N2010 P2Use information from Fig. 8 to explainwhy some waves are described asconstr...
Use information from Fig. 8 to explain why somewaves are described as constructive, whilst othersare described as destruct...
Coasts are shaped by ...                                      Text pg   Tides                                189• Daily al...
Coasts are shaped by ...                        Text pg  Currents                189• Large scale  movement of water  in t...
20
5 (a) (i) State the differencesbetween           destructive andconstructive           waves. [3]    (ii) Explain how cons...
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Coasts 1 blog

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  • Good noise ( response) Ask questions
  • Write on whiteboard
  • Wind speed: greater velocity results in greater energy Duration: time taken to generates the waves Fetch: distance or length of the sea( greater fetch greater wave energy)
  • Answers for the questions
  • Swash stronger than backwash
  • Backwash stronger than swash
  • Longshore drift in net lesson
  • Transcript of "Coasts 1 blog"

    1. 1. Class expectations Q&A, blog, textbook 1
    2. 2. The big picture- text pg 207LESSON TOPICS 1 AGENTS SHAPING COASTS 2 COASTAL PROCESSES 3 COASTAL LANDFORMS 4 WELL LABELLED DIAGRAMS 5 COASTAL PROTECTION MEASURES 6 LEVEL DESCRIPTORS, 2
    3. 3. Wave Waves energy Wave movementCoastsare Tides Wave typesshapedby ... Currents 3
    4. 4. Todays objective• Describe the factors affecting wave energy and the types of wave movement• Describe and account for the different types of waves 4
    5. 5. Q: What is a coast vs a shore? Coas t Sho r e 5
    6. 6. Waves• Wind energy on the water surface• Water particles on top moves, but below doesnt• Creates circular motion• Seawater rises and drops 6
    7. 7. Wave Waves energy Suggest factors that determinesthe different size of the 2 waves? 7
    8. 8. Text pg Waves Wave energy 186 Windduration Fetch Wind speed 8
    9. 9. Wavemovement Swash / backwashWatch thevideo anddecide whichis a swashand abackwash? 9
    10. 10. Wavemovement Refer to the vide and text pg 187, Elab orat e on the diffe renc es betw een swa sh and back was h [3] 10
    11. 11. Wave movement Swash Backwash ForwardFormation movement of Pull of gravity wavesDirection Up shore Back to seaSediments Deposit Erosion 11
    12. 12. Constructive orWave types Destructive waves? Small waves grinding the rocky shore of the Bengtskar island 12
    13. 13. How to deter mine the types ofwaves?height and • Wave Text pg 188 length • Wave frequency • Breakers • Swash and backwash • Gradient of slope • Open or sheltered coast • Deposition or erosion 13
    14. 14. Deposits sediments 14
    15. 15. Erodes coast +transport sediments away 15
    16. 16. Activity- pair work:O level Geog Elect N2010 P2Use information from Fig. 8 to explainwhy some waves are described asconstructive, whilst others aredescribed as destructive. 16
    17. 17. Use information from Fig. 8 to explain why somewaves are described as constructive, whilst othersare described as destructive. Constructivewaves waves Destructive waves• Low energy • High energy waves (small) (large)• Swash stronger than • BW is stronger backwash as BW is weak because energy is used than swash due to to overcome friction with strong winds gentle seabed • Strong BW• Deposition of sediments removes the occurs as BW is too eroded materials weak to carry load back into the sea to sea 17
    18. 18. Coasts are shaped by ... Text pg Tides 189• Daily alternate rising and falling of the sea level• Cause by gravitational pull of the moon• Each coastal area receive two high tides and two low tides daily• During high tide, waves tend to erode more than deposit 18
    19. 19. Coasts are shaped by ... Text pg Currents 189• Large scale movement of water in the ocean driven by wind• Longshore current: flow parallel to a coast ( form by waves approaching at an oblique angle) 19
    20. 20. 20
    21. 21. 5 (a) (i) State the differencesbetween destructive andconstructive waves. [3] (ii) Explain how constructivewaves may form beaches. [3] 21
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