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Quarter 2 of School Year 2014-2015

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Monday 10/20:

Planner: Sea Surface Data Analysis 43
EQ: Explain how to analysis Sea Surface Height Data?



Looking at an SSHD map, one sees immediately that sea level is not the same everywhere. Sea surface continually fluctuates due to natural forces, such as the trade winds, tides, waves, glacier melts, density, and gravity.

Wind can push water around in the ocean, causing water to pile up on top of resting water. This results in greater sea surface height in some locations.

Assign students to examine the Monthly Average Sea Surface Height Deviation map for November 1995 and answer the questions on the sheet.

Click this link to view the satellite data for Nov 16, 1999

SSHD data changes from the possible effects of wind, glacier height, gravity, tides, or atmospheric pressure systems.

Complete the Chart

Click this link to view the Tide Model

Enter 1.2 meters in the box labeled Max. Height Change

If water is always moving, how do you get a general measurement for the water level at a location?

How can you tell if a change in the water level is large or small?

Students will generate some sample water level data using a balloon as a simple model of the ocean in order to calculate the mean. I will select two students to gather data to be used by the class.

Procedures:
1. Place a sheet of paper across the bottom of a waterproof plastic tub or basin. Lay a balloon filled with water across the paper.
2. Sea surface height data is reported as the height difference relative to an expected or average height at any given location. Choose a location along the length of the balloon. Use a marker to mark that location next to the balloon on the paper at the bottom of the basin.
3. With the balloon sitting undisturbed, stand the ruler at the mark you made on the paper. Measure the height of the balloon at the mark in centimeters and record the height on the data sheet.
4. Now apply pressure somewhere on the balloon so that its shape changes. While pressing on the
balloon, measure the height at the mark on the paper and record the height on the data sheet.
5. Repeat step 4 at least three times. Each time, vary the pressure put on the balloon. You can put
pressure on a different spot or vary the amount of pressure you apply. Each time, record the height on the data sheet.
6. Next, compute the mean for the data collected. The mean is equal to the sum of all the
measurements, divided by the number of measurements recorded. mean height = sum of height measurements number of measurements
7. Once you have the mean, calculate how much each data point deviates from that mean. To do
this, subtract the mean from each height measurement recorded. Write the results in the column marked Deviation. deviation = height measurement - mean height

Tuesday:

 

Planner: Determining Storm Surge Height pg 45
EQ: How do storm events impact water levels at my coastal location?


Water level around the globe is always changing as a result of many factors. One of those factors is the effect of tides caused by the gravitational attraction of the Moon. In this activity, you will use charts of real tide data, like the one shown below, to research tides in a specific location. Your goal is to describe the typical height change and period of the tidal change.

Click this link to view the Tide Model

Enter 1.2 meters in the box labeled Max. Height Change

If water is always moving, how do you get a general measurement for the water level at a location?

How can you tell if a change in the water level is large or small?
Form a hypothesis before designing your investigation.
Research question: How do storm events impact water levels at my coastal location?
Hypothesis: If____________________________________ Then ________________________
Because ______________________________________________________________________

How to Read Tidal Data


Tidal Data Honolulu, HI 10/9 – 10/13


Data Sheet (Honolulu, HI 10/9 – 10/13)
Date
Time
Low Tide Height
High Tide Height
Tide Height Change
Tide Cycle Period
10/9
10/10
10/11
10/12
10/13
Tidal Data Honolulu, HI (10/16 – 10/20) Hurricane Ana
Data Sheet (Honolulu, HI 10/16 – 10/20) Hurricane Ana
Date
Time
Low Tide Height
High Tide Height
Tide Height Change
Tide Cycle Period
10/16
10/17
10/18
10/19
10/20

Graph Tide Height Change
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Wednesday: No School Teacher Institute Day

Thursday & Friday: Analyzing Data & Drawing Conclusions Storm Surge Data pg 46

Planner: Analyzing Data & Drawing Conclusions Storm Surge Data pg 46

EQ: Explain how to analyze data & draw conclusions about the storm surge data.


Analyzing Data & Drawing Conclusions Storm Surge Data pg 46


I. Create a Graph












II. Analyze Data










III. Draw Conclusions











1. Share your graph with your elbow partner. Is it the most accurate representation of the data that answers the questions? Did Hurricane Ana impact water level at Honolulu, HI.?


2. Create a graph

Click this link to go to the create a graph page


3. Analyze Data:

Is the water level higher during Hurricane Ana?

What are reasons they are or are not?

Compare and contrast the data. Are there any similarities or differences?


4. Draw Conclusions:

1. Was your hypothesis true or false?

2. Were there any errors in the experiment?

3. How could the experiment be improved or made more accurate?