date: 3-sep-15aim – what are constructive and destructive waves? waves what are constructive and...
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Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
WavesWavesWhat are constructive and destructive What are constructive and destructive
waves?waves?
Why? They cause different landforms along the coast
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
WavesWavesWhat are constructive and destructive What are constructive and destructive waves?waves?
IntroductionIntroductionWave galleryWave galleryIntroductionIntroductionWave galleryWave gallery
Mix-matchMix-matchMix-matchMix-match
Most-likely / least likelyMost-likely / least likelyMost-likely / least likelyMost-likely / least likely
Beat the teacher:Beat the teacher:2 wave types2 wave types
Beat the teacher:Beat the teacher:2 wave types2 wave types
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Constructive Constructive and Destructive and Destructive
waveswaves
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Storm wavesStorm waves
SoutSouth h AfricAfricaa
DurbanDurban
Extremely long fetch
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Mexican wavesMexican waves
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Royal waveRoyal wave
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
1.1. Circular orbit in open waterCircular orbit in open water
2.2. Wave becomes more elliptical in Wave becomes more elliptical in movementmovement
3.3. Friction slows down base of waveFriction slows down base of wave
4. 4. Water from previous wave returns as Water from previous wave returns as backwashbackwash
5.5. Shelving sea bed (beach)Shelving sea bed (beach)
6. 6. Water rushes up the beach as swashWater rushes up the beach as swash
7.7. Increasingly elliptical orbitIncreasingly elliptical orbit
8.8. Top of wave moves fasterTop of wave moves faster
9.9. Wave begins to breakWave begins to break
10.10. Formation of a waveFormation of a waveCan you Can you
match these match these labels with labels with the stars on the stars on
the the diagram?diagram?
Animation – WaveAnimation – Wave 2 types2 types
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Most likely to…Most likely to…• Most likely to have a strong swashMost likely to have a strong swash• Most likely to have a strong backswashMost likely to have a strong backswash• Most likely to be tallMost likely to be tall• Most likely to have a long wavelengthMost likely to have a long wavelength• Most likely to occur in winterMost likely to occur in winter• Most likely to be a steep waveMost likely to be a steep wave• Most likely to be powerfulMost likely to be powerful• Most likely to build up a beachMost likely to build up a beach• Most likely to be slow moving wavesMost likely to be slow moving waves• Most likely to be a longer time between each Most likely to be a longer time between each
wavewave
Constructive
Destructive
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
Beat the teacherBeat the teacherConstructive waves are sometimes known as surfing Constructive waves are sometimes known as surfing waves and mainly occur in summer. They help to waves and mainly occur in summer. They help to build beaches up with their strong backwash. They build beaches up with their strong backwash. They move fast unlike destructive waves. Destructive move fast unlike destructive waves. Destructive waves are small, steep waves that are mainly found waves are small, steep waves that are mainly found in winter, during stormier conditions. They have a in winter, during stormier conditions. They have a strong swash and remove beach material. Destructive strong swash and remove beach material. Destructive waves have a long wave period unlike constructive waves have a long wave period unlike constructive waves. waves.
Date: 21 Apr 2023 Aim – What are constructive and destructive waves?
HomeworkHomework
• For a set number of places around For a set number of places around the coast, work out the fetch and the coast, work out the fetch and whether you’re likely to get whether you’re likely to get constructive or destructive wavesconstructive or destructive waves