Different Waves Aims: To understand the different types of waves, different beach profiles and beach morphology.

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Presentation transcript:

Different Waves Aims: To understand the different types of waves, different beach profiles and beach morphology

Specification content

Starter Ocean waves and Erosion. https://www.youtube.com/watch?v=SoOb4fg7cqk Define the key terms: WAVES FETCH TIDES SWASH BACKWASH

Changes in waves as they approach the shoreline (see p8 booklet)

A-LEVEL GEOGRAPHY TEACHING AND LEARNING RESOURCES Different Waves The type of waves along a coast are crucial to understanding the landforms. There are two types. A constructive wave ‘SPILLING’ waves A destructive wave ‘PLUNGING’ waves A-LEVEL GEOGRAPHY TEACHING AND LEARNING RESOURCES

Constructive vs Destructive (see p8 booklet)

Beach Morphology(see p9 booklet)

THE SWASH OF A CONSTRUCTIVE WAVE DEPOSITS LARGER MATERIAL AT THE BERM – THE SWASH OF A CONSTRUCTIVE WAVE DEPOSITS LARGER MATERIAL AT THE TOP OF THE BEACH. BERMS ARE USUALLY COMPOSED OF SHINGLE. BEACH PROFILES ARE STEEPER IN THE SUMMER

OFFSHORE BARS – BERMS ARE ERODED BY PLUNGING WAVES AND HIGH ENERGY SWASH. STRONG BACKWASH OF A DESTRUCTIVE WAVE TRANSPORTS SEDIMENT OFFSHORE. BEACH PROFILES ARE SHALLOW IN THE WINTER

See page 10, booklet)

Beach morphology (See p10 booklet)

Plenary: What shapes a coastline? Look at this photo. Try to come up with as many factors/processes which may be shaping this coastline. A-LEVEL GEOGRAPHY TEACHING AND LEARNING RESOURCES