Tidal Graphing
The following tide measurements were collected over the course of 1 month in San Francisco Bay.
The height measurements report feet above or below “normal” water level.
Graph the data using Xcel.
Include all of the necessary requirements for a good graph.
Type the answers to the questions in a text box within the Xcel document.
When you are finished “DragNDrop” your Xcel document.
Tide fluctuations over time San Francisco Bay
Data Point Height (ft.)
1.
1.3
2.
4.3
3.
0.3
4.
5.2
5.
0.5
6.
4.4
7.
0.5
8.
5.8
9.
-0.3
10.
4.5
11.
0.7
12.
7.3
13.
-1.5
14.
4.4
15.
1
16.
6.7
Questions: Type answers to the following questions within a text box within the Xcel document.
1.
What is the high tide in feet?
2.
What is the low tide in feet?
3.
What is independent variable?
4.
What is the dependent variable?
5.
At what data points in the graph would you think the spring tides occur?
6.
Label this area on your graph.
7.
At what data points in the graph would you think the neap tides occur?
8.
Label this area on your graph.
9.
At what point would you expect there to be a full moon ?
10.
Label this area on your graph.
11.
At what point would you expect there to be a quarter moon ?
12.
Label this area on your graph.