1. Waves and Tide Review

2. Challenge Question
Based on the image what do you think is the relationship between depth of water and the speed of a wave?

3. Let’s Find Out
Waves slow down as they approach the shore due to increasing amplitude (wave height)

4. Review
Parts of a Wave
Which color of light travels the furthest? The Least?
What is the difference between wind duration and fetch?
Would a surfer appreciate a plunging or spilling wave? Why?
Crest, Trough, Wavelength, Wave Height, Resting Line
Blue Furthest, and Red Least in Water
Wind Duration – Measures time, Fetch – Measures distance of wind movement
Plunging – More “violent” wave with larger waves which roll over.

5. Let’s Look At Your Tides Notes From Yesterday
Summary:
The water movement on the shoreline is different depending on the time of the day. How this water moves in and out is called a tide and is impacted by the rotation of the earth, and the alignment of the sun and moon. Highest High and Lowest Low is caused by total alignment (Spring Tide). A right angle causes neap tides (Not as extreme).

6. Tides What is an easy way to explain tidal range? How do you find it?
What are the three different frequencies of tides?
Tidal Range – Difference between the high tide and low tide from the day
High Tide minus Low Tide
Diurnal, Semi-Diurnal, and Mixed

7. Must always measure on a basic 24 hour block of time…
Which is Which?
Must always measure on a basic 24 hour block of time…

8. ?
Mixed

9. ?
Semi-Diurnal

10. Review #2 Can sound waves move through water? If so how are they used?
Match terms to wave type (4 types from your Frayer Models)
Impacted by the Moon
Capsizes Boats
Rocking Motion
Earthquakes
Period v. Frequency – Time for One Wave/Amount of Waves in One Second – What is the relationship between the two?
Yes they can move through water, examples of uses are Whales for migratory communication and Dolphins when capturing food.
Impacted by the Moon = Tidal Waves, Capsizes Boats = Rogue Waves, Rocking Motion = Seiche Waves, and Earthquakes =tsunamis
Period = Time for One Waves and Frequency = Amount of Waves in One Second (Inverse Relationship meaning as the period increases the frequency decreases)

11. What is it?
Diffraction

12. Mapping Tidal Patterns – Part 1
Determine the Tidal Range
Highlight your highest high tide and lowest low tide (may be more than one) – Then mark these Spring Tides on the side of the chart.
Highlight your lowest high tide and highest low tide (may be more than one) – Now mark these Neap Tides on the side of the chart.
Remember when mapping tidal range A positive minus a negative means adding the numbers together
example is meters – (-0.6 meters) is the same as 1.4 meters meters = 2 meters

13. Mapping Tidal Patterns – Part 2
LABEL THE X AND Y AXIS – X and Y Determine: What data goes on the X axis? How many lines will you have to complete this axis? Label your X axis and give it a Title. Determine: What data goes on the Y axis? What do you notice about this axis? Label your Y axis and give it a Title. Plot and Connect Each Point Together

14. Which is spring and which is neap?
Review #3
Spring – Total Alignment, Highest high tide and lowest low tide – Largest Tidal Range
Neap – 90 degree Angle, Lower high tides and higher low tides – Smaller Tidal Range
Which is spring and which is neap?
How would you describe these tidal patterns to someone who asked?

15. Low Tide can also be called ___________ tide.
High Tide can also be called ____________ tide
Compare diurnal and semi-diurnal
What is this an example of?
Low = Ebb and High = Flow
Diurnal = 1 high and 1 low Semi-Diurnal = 2 high and 2 low

16. What causes a wave to break?
Waves
What causes a wave to break?
Is light penetration the same at all depths?
What is the formula for wave velocity?
When the depth of the water is less than 1/2 the wavelength
No, some colors (green and blue) penetrate deeper then others, such as red.
V = d/t