Curated OER
Stacking Water
Students experiment with different salinities of water using straws and different colors of water. They collect and interpret data from the experiment.
Curated OER
Investigating Properties of Water: Temperature
Investigate how temperature affects the density of water and stratification that occurs in bodies of water when temperatures vary. Water of differing temperatures is given different colors to see the layers that form. The lesson is meant...
Curated OER
Density Dynamics
Students set up working models demonstrating lake turnover and the formation of deep water masses in the oceans.
Curated OER
Changing Planet: The Warming of Our Large Lakes - Reasons for Concern
Another A+ instructional activity on the impact of climate change comes to you from the National Earth Science Teachers Association. In this installment, learners model the stratification of water in lakes due to temperature differences....
Curated OER
Lake Strata and Internal Waves
Use the classic density demonstration of placing a cola, a clear soda, and a diet soda into a tank of water. Then let learners attempt to pour some of the soda into layers in a clear container. The procedure explains a thermocline, and...
Curated OER
Tides in the Hudson
Students view an illustration of the Hudson River watershed and identify the bodies of water shown. They discuss what happens when fresh and salt water mix. Students view a teacher demonstration of the stratification of fresh and salt...
Curated OER
Liquid Rainbow
Students develop their own techniques for drawing a small sample of solutions into a straw. They hypothesize ways to increase the density of water, and discuss how salt-free rainwater tends to float on top of salty seawater.
Curated OER
Teaching About the Properties of Water
Students use video, Internet research, graphs and tables, worksheets and hands-on experiments to investigate the properties of water in a lake environment. They work under direction or through an inquiry process.
Curated OER
Thermal Stratification
Students use video, research and experiments to investigate and replicate thermal stratification in a lab. They prepare a report, poster or multimedia presentation showing the results of their work.
Curated OER
Marine Fisheries Management
The many aspects to consider in Marine Fisheries are covered in this very detailed PowerPoint. There are a large number of slides dealing with both the conditions to consider and terms regarding fisheries. It also covers the laws,...
Curated OER
Great Lakes Ecology
High schoolers are able to use a secchi disk to measure the turbidity of water by determining the depth at which the sechi disk is no longer visible and using the data in a formula to quantify the results. They are able to use Vernier...
Curated OER
Teaching Modeling Water Quality
Young scholars explore the basics of interpreting RUSS temperature and oxygen profile data. They are introduced to the Geographic Information Systems (GIS), particularly with respect to interpreting maps.
Florida International University
Pipeline to the Coral Reefs
Discover firsthand the effects of internal waves on coral reefs. Through a series of experiments, learners simulate internal waves and upwelling events as they make observations on the movement of water and other debris. They then...
Curated OER
Lake Superior Ecology Unit
Sixth graders research Lake Superior and its ecosystem. Students investigate the lake's cycles of mixing and stratification and how these cycles affect the biology of the lake. This lesson contains five days of activities.
Curated OER
Density Stratification and Ocean Circulation
Students examine how circulation currents of the ocean. They use a tub of hot and cold water to demonstrate the currents. They discover how salinity and temperature of water affect its movement.
Curated OER
Marine Fisheries Management
Almost 200 slides make this a vast collection! It is a quirky collection, titled "Marine Fisheries Management," but having little to do with that occupation. What you will find are two-toned blue backgrounds with no pictures, but a few...
Polar Trec
Sea Ice Impact
The arctic seas contain currents that are both warm (with high salinity) and cold (relatively fresh water) that circulate throughout the year. Through discussion, a lab, and a web quest, participants explore the impacts of melting and...
Polar Trec
Ice Cores: Modeling Ice Sheets
Ice cores provide scientists with knowledge of historic melt layers, air temperatures, greenhouse gases, and climate stability. Scholars work in groups to build layers representing snow and ice over thousands of years. Then, groups...
Curated OER
Teaching about Diel Temperature Variation
Students explore temperature variation in lakes and deal with the data.
Curated OER
Layers of Time in the Earth
Students are introduced to the concept of stratification as a historical and geological process. Students will read about the Richard Beene archaeological site, which lies near San Antonio, Texas on the Medina River, and watch a short...
Curated OER
Pipeline to the Coral Reefs
Young scholars discuss the relationship of density to stratification. For this marine science lesson, students create a model of upwelling events using cold and warm water. They discuss how water phenomena affect coral reefs.
Curated OER
Teaching about the Chemistry of Oxygen Solubility
Students explore solubility of gases in water, Henry's Law, LeChatelier's Principal, and supersaturation of gases in water.
Curated OER
"Dead-Zones" and Coastal Eutrophication: Case-Study of Chesapeake Bay
Take an in-depth look at nutrient loading, eutrophication, and hypoxia using data on The Chesapeake Bay as an example. This comprehensive presentation includes detailed graphs, photos, and details about the changes in marine organism...
Curated OER
Growing from Seed
High school or college horticulturists will appreciate this PowerPoint on seed-propagation. It walks them through the science behind seed production and germination as well as the requirements for growing plants from this stage....