1. types of waves

Types of waves

1. The yearly plan for Geography in year 10

2. GET THINKING! What’s going on in the photograph? Should we be concerned? Why might we be concerned? Do things change at this location? Do those waves do anything to the coastal environment?

3. Big Picture Waves The cause of waves Why some waves are stronger than others? Constructive and destructive waves How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. Waves Ripples in the sea caused by the transfer of energy from the wind blowing over the surface of the sea. Key Vocabulary Page 92 -93 13 March 2019

4. You can describe how a wave forms and what happens as it approaches the coast. You use a limited range of specialist terms You have a reasonable accuracy in the use of spelling, punctuation and grammar. You can draw diagrams of constructive and destructive waves. You use a good range of specialist terms You have a considerable accuracy in spelling, punctuation and grammar. You can compare the characteristics of constructive and destructive waves.. You use a wide range of specialist terms where appropriate. Accurate use of spelling, punctuation and grammar. Learning Outcomes – Success Criteria L3 - Detailed Answer L2 - Clear Answer L1 - Basic Answer How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

5. Produced by Mr M Colclough How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

6. How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. Using your knowledge from the video and also using the information on the next two slides, fill in every section on the Activate Sheet. We will check the answers shortly afterwards.

7. Waves form when the wind blows over the sea . Friction with the surface of the water causes small ripples in the water, which develop in to waves. The distance the wind blows across the water is called the fetch . The longer the fetch, the more powerful the wave. Waves can also be formed when earthquakes and volcanic eruptions shake the seabed. These waves are known as tsunami waves. How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

8. Despite the relatively wavy surface in the open sea, there is little horizontal movement of water. This only occurs when the waves break and surge up the beach as they approach the shore. As the water gets shallower, the seabed interrupts the circular motion of the water making the waves more elliptical. This causes the crest of the wave to rise up and eventually collapse onto the beach. The water that rushes up the beach is called the swash and the water that flows back towards the sea is called the backwash. How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. What Happens When Waves Reach the Coast?

9. What is need for a ripple to form and develop into a wave? Wind B) Hot air C) Distance What does fetch mean? The movement of water up the beach The distance the wind blows across the water Shallow water interrupting circular motion of waves. Which statement is true? The longer the fetch, the more powerful the wave. The shorter the fetch, the more powerful the wave. How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. Extension Task: Answer the questions in your exercise book Subtitle: Question Time

10. Draw two diagrams in your book; one to show constructive waves and another to show destructive waves. You may use p93 in the text book or the diagrams on this slide. Constructive Wave Destructive Wave How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

11. Produced by Mr M Colclough How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. Constructive Wave

12. Produced by Mr M Colclough How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics. Destructive Wave

13. Glue the table into your books and use your diagrams to compare the characteristics of constructive and destructive waves. Wave Characteristic Constructive Wave Destructive Wave Wave height Wave length Wave Frequency Type of wave break (spilling or plunging) Strength of Swash Strength of backwash Net beach sediment (gain or less) How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

14. Compare the characteristics of constructive and destructive waves [4]. One feature of a constructive wave is……..another feature is……..Whereas destructive waves have……they also have…………. Exam Style Question L2 - Clear Answer Produced by Mr M Colclough How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.

15. Compare Command Words Identify similarities and differences between two or more things. Making the Grade:

16. Use a green pen Compare the characteristics of constructive and destructive waves [4]. Exam Style Question Lets listen to some answers Level 1 Basic (1 – 2 marks) Describes characteristics. Differences are not clearly described. No comparative language has been used. Only given characteristics of one type of wave. Level 2 Clear (3– 4 marks) Must give characteristics of both constructive and destructive waves. Must use comparative languages (whereas, however, in contrast, compared with). L2 - Clear Answer L1 - Basic Answer How and where Do Waves Form? LO: To understand about the formation of waves and their characteristics.