EU11: Ocean Ups and Downs  
Learning Objective  Software  Level 
Students will take ocean wave height data from a map and ocean sea surface height data from the same location on a different map. They will plot the ocean wave height data versus the ocean sea surface height data and learn whether waves are largest where the sea height is high versus where it is low. 
Hydrosphere 
Grade 78, but easily adaptable for older (Algebra 1 or Science) students 
Introducing the Activity  Content  
Tell students that measurements from space can tell us the overall sea level height, and also the heights of the waves. They can choose as data points any point at that approximate latitude (note that the temperature is not uniform for a certain latitude  some areas are hotter and some are cooler. Note that this activity is a good followon to Activity 2: Is the Sea Level? , which has the student explore whether the sea level is higher in warm areas of earth or cold areas of earth. This activity uses a linear equation to quantify the relationship between wave height and sea level. (Note that the two maps use different units  the top map is measured in meters and the lower map in cm). 
Specific Science Content Standards
Specific Mathematics Content Standards

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