American Chemical Society
Temperature Affects Density
Different substances can have different densities, but can the same substance have different densities? Lesson explores the effect of temperature on the density of water. Extension idea connects the concept of how melting ice in lakes...
Curated OER
Density Dynamics
Students set up working models demonstrating lake turnover and the formation of deep water masses in the oceans.
Curated OER
Soil Porosity, Moisture Content, pH, and Density
This lab activity does not have to be done with AP environmental scientists. It can also be done with middle to high school earth scientists. The procedures aren't complex. Learners determine the density of dry and wet sand in order to...
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...
University of Southern California
Design and Test an Air Lift Siphon
Build an air lift siphon using your mad physics skills! Learners first investigate the importance of circulating water in aquaponics systems. They then use density to their advantage as they engineer an air lift siphon
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
Water
Students conduct a series of investigations on the unique properties of water. In this general science lesson, students explain what causes water's surface tension. They explain the different stages in the water cycle.
Curated OER
Isolating Bacteria from a Mix Culture
Students isolate three species of bacteria using the plate streak method, implement sterile microbiology techniques, and produce pure cultures of each microorganism at the end of this exercise. They write a descriptive paragraph for each...
Curated OER
Biomanipulation
Young scholars explore the effects of aquatic trophic relationships on water transparency. They observe and explain the effects of reducing nutrient inputs on agal density on water transparency.
Curated OER
Manage Soil
Pupils identify and classify soil ypes according to data on the soil triangle. Given examples, students identify soil conservation practices, using criterion assessment instrument. When giving a case situation involving soil...
College Board
2016 AP® Biology Free-Response Questions
A remarkably high number of scholars passed the AP Biology exam in 2016 with over 61 percent earning college credit. The College Board released the entire free-response section for future scholars to study. After answering the eight...
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
What is an Estuary?
Students define the terms estuary and watershed. They conduct an experiment to determine the density differences between fresh and saltwater. They examine the salinity distribution of the Peconic Bay Estuary.
Curated OER
Phytoplankton in the Gulf of Maine
Students use satellite data to see the correlation between sea temperature and sunlight in the Gulf of Maine. In this phytoplankton lesson students use Excel to analyze data.
NOAA
Currents
Learn how ocean currents are vital to humans and marine life. The eighth installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program, focuses on ocean currents and how they affect global climate. The...
NOAA
Currents
A deep ocean current circles the globe at a force that is greater than 16 times all the world's rivers combined. Groups analyze the effects of submarine topography on deep ocean current speed. They then determine how this speed affects...
Curated OER
The Motions of the Oceans
Students examine the topics of ocean waves, currents, and tides. They locate and label ocean currents on a world map, conduct experiments, analyze key vocabulary, view demonstrations and record the data, and complete handouts.
Curated OER
Tracking Narwhals in Greenland The Ocean Unicorn
Students study the ecology, habitats, geographic range and feeding habits of narwhals. They determine at least three reasons for the decline in the narwhal populations and complete the accompanying worksheets.
Curated OER
Frozen Out
Students investigate how climate changes affect top predators in Arctic marine ecosystems. Students complete a worksheet and write a report based on their responses to a scientific paper.
Curated OER
Oil Spill
Young scholars explore an important role of environmental engineers by studying the Exxon Valdez oil spill. They experiment with different strategies in order to clean up their own manufactured oil spill.
Curated OER
The Future of Arctic Sea Ice
Students research about the importance of sea ice to world climate and sea organisms. In this earth science lesson, students create a model of present and future Arctic sea ice communities. They discuss how ice melting affects...
Curated OER
Milk: A Practical Application
Pupils examine the impact of the physical and chemical properties of milk and its use as an important food.
Curated OER
Fossil Fuels, Who Needs Them
Ninth graders explore how electricity is created and distributed through alternative production methods. Students participate in hands-on activities, research, lecture based instruction, and CD ROM resources.
Curated OER
Soil Morphology
Students analyze images of five different soil types from various locations and discuss how climate, vegetation, parent material, topography, and time can contribute to soil characteristics.