Beach Profiling Introduction:

Over time beaches change shape. Many variables can affect the shape or 'profile' of a beach. One variable is the direction and strength of the wind because grains of sand are small and light. Another variable is the ocean, by that I mean the size of the waves, current directions in reference to the beach, and tides. Tides are a big part in the shape of a beach because it changes how much of the beach there is above the water. There are countless variables but I will list just one more; storms, everyone who lives near a beach knows how it is almost like the sand retreats into the ocean during a storm and then in the course of a couple months, depending on the severity of the storm, it slowly returns to the shore. Our specific site is currently recovering from a storm. Also, The Pacific Whale Foundation is in the process of restoring the dunes of the beach.

Beach Profile!

1. Collect all of your materials.
2. Go to your beginning point.
3. Record the date and the names of your team members on to the data sheet.
4. Place the end of the transect tape on the anchor point and extend tape to the foot of the beach.
5. Turn on GPS device and record beginning point coordinates on data sheet.
6. Record the directional reading of the compass on to the data sheet.
7. Weather the beach is gaining vertical height or losing it over the next meter place the rise pole on the higher point and the run pole on the lower point.
8. Make sure both poles are level and a meter apart using the horizontal portion of the run pole. If for some reason, there is not enough room for the poles to be a meter apart then make them as far apart as appropriate and record distance change on data sheet.
9. Record intersect point on the rise pole on appropriate section of data sheet.
10. Repeat steps 6 through 8 moving one meter closer to the beach each time, do so until the foot of the beach.
11. un-hook transect tape from anchor point, turn the handle of the transect tape and retract it.

Beach Sand Source Lab!

Introduction: For this Lab, we are experimenting different beach sand. We are taking samples from the beaches that we chose, and test them out. Once we have our samples, we will be testing them with vinegar to see how they react. Question: How will Black Sand Beach, and Big Beach's Sand react to the Vinegar in this experiment? Will they react the same, Or different? Latitude and Longitude Of six different Beaches I chose:

• Black Sand Beach-19.36N 155.504W


• Hookipa-205600N 1562127W


• Puu olai-205600N 1562646W


• Kapalua Bay-205958N 156400W


• Oneloa Bay-21017N 1563931W

Black Sand Beach Hypothesis: I think that the sand on Black Sand beach is detrital because of the black rocks from la Parous, and the red sand from the red dirt cliff.

I don't think that Black Sand beaches sand will have much of a reaction to the vinegar because of the more rocky, dirt texture.

Big Beach Hypothesis: I think that Big Beach sand is detrital because of the reef, and predominant from the current moving sand there from another Island. I think that Big Beaches sand will have more of a reaction to the vinegar because of the more blended, smaller texture. Prediction: I predict that the two beaches will react very differently. Materials:

• Van


• Cups


• Journal


• Pen


• Vinegar

Procedure: We picked a few beaches that we wanted to experiment, and researched them to find their Latitude and Longitude. We went to two beaches we chose to get samples, take pictures, and collect data. With all the information that we learned, we started to write our information down to get ready to write our Lab.

Conclusion: My Hypothesis for Black Sand beach was correct. We took a sample of the sand, and added Vinegar; there was a minimal reaction because there is some specs of predominant sand, but most of the sand is detrital. My Hypothesis for Big Beach was also correct. We sampled the sand with Vinegar, and it made a full on reaction.