Transcript The Power of Water: Waves ppt

Kluge, 2010
Group Activity
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In Groups of 2
Answer two of the following questions using the
information provided
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Group 1. What are waves?
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Group 2. a) What types of waves are there?
b) What are the parts of a wave?
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3. How are waves formed?
Group 4. Name 4 ways in which waves affect
our landscapes (i.e. shorelines).
Group 1: What is a Wave?
1 a) What is a (Water Surface) Wave?
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“One of a series of ridges that moves across the surface of a
liquid (especially across a large body of water)”
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“A disturbance that propagates (moves) through space and
time, usually with transference of energy”
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A wave is a moving ripple of water across an
ocean, lake, or other body of water, that is caused
by the transfer of energy passed from one particle
to another.
Group 2: Types of Waves
2a) Types of Waves
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*Ocean Surface Waves*
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Sound Waves
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A mechanical wave that travels through gases, liquids, solids and
plasmas (i.e. sound waves of dolphins)
Electromagnetic Waves
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Travel through water (i.e. waves for surfers)
Radio Waves (i.e. by lightning)
Ultraviolet Light (i.e. by sunlight)
Seismic Waves (Earthquakes)
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Waves of force that travel through the Earth or other elastic bodies,
for example as a result of an earthquake, explosion, or some other
process that imparts forces
2b) Parts of a Wave
3) What are the Parts of a Wave?
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Crest: The highest point (peak) of a wave
Trough: Lowest point of a wave (where wave is smallest)
Wavelength: The distance between two crests or two troughs
Wave Height: The distance between a crest and a trough
Parts of a Wave
How Waves are Formed
Group 3: How are Waves Formed?
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Waves are formed by wind
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We can also make waves with speed boats, etc.
1. Winds blow across the surface of the sea
2. These winds pass their energy to water particles in the water
3. This energy transfer causes the water particles to move in a
circular motion
4. As these moving water particles collide with others, they pass
more energy to them, and create a wave.
5. The faster the wind blows, the faster these waves get
3D Ocean Wave Simulation
<<http://www.forgefx.com/casestudies/prenticehall/ph/waves/waves.htm>>
Group 4: How Waves Affect our
Landscapes
How do Waves Affect our Landscape?
Over the course of time, waves can…
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Wear away the land on beaches (Erosion)
Deposit sand along the shore (Deposition)
Move sand along the coast from one location to
another
Create sea caves through erosion
Create sea stacks through erosion (ie., Hopewell Rocks)
Sea Caves
Lake Superior, Ontario
Sea Stacks
Hopewell Rocks, New Brunswick
Key Terms
Write a definition of the following terms into your binder:
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1. Wave: A wave is a moving ripple of water across
an ocean, lake, or other body of water, that is caused
by the transfer of energy passed from one particle to
another.
2. Crest
3. Trough
4. Wavelength
5. Wave Height
6. Erosion
7. Deposition
Tides: Diagnostic Assessment
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What do you know NOW about tides?
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What will you know after our tides lesson?
Homework Research Assignment [Handout]
Answer the following questions on the provided handout using
your textbook, the internet, or any other source of information
1. What is a tide?
2. What causes tides/How are tides formed?
3. What affects the size of tides?
4. Where are the highest tides on earth?
5. What is a tidal bore?