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WHY DO SOME THINGS FLOAT WHILE OTHERS SINK
Students explore how density can cause things to sink or float by experimenting with a jar, oil and corn syrup.
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Teacher's Guide For: Water Temperature and Salinity Experiment
Students experiment with water density, temperature and salinity. In this water lesson, students observe how the coldest water sinks to the bottom of a test tube, and how saltwater sinks in comparison to freshwater.
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Water Density and Stability Lab
Students observe how different water densities and salinity control the depth at which different water masses occur. Submarines are used as a case study. This is a well-designed with an excellent worksheet.
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Learning Lesson: That Sinking Feeling
Students discover the origin of the Great Ocean Conveyor. They participate in a demonstration showing how salinity and temperature affect water density. They also examine the new sea ice that forms every winter.
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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.
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Most Troublesome Exotic Invasive Plant Species Web Quest
Students participate in a Web Quest activity in which they identify common exotic invasive plant species of the Southern Appalachian Region. After identifying the top 10 exotic invasive species, they choose one to research in depth.
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The States of Water
Students observe water changing states from a solid to a liquid to a gas.
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Air Expansion and Contraction
Students observe that air exerts pressure, that heated air expands and that cooled air contracts. After the demonstration, students engage in a question and answer session about what they saw.
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Heat Currents
Students using a slide made out of aluminum foil and pin holes observe visible light.
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Water Magicians
First graders observe water changing states from a solid to a liquid to a gas. They predict what they think happen to ice cubes as they sit out. They paint water with paintbrushes outside the classroom in the sun and watch the water...
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Oregon Cities
Students research one 20th century Oregon city, focusing on its population changes and the reasons for the changes. They write an expository essay which includes graphs/charts.
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Learning Lesson: Salt 'n Lighter
Students participate in a demonstration showing that as salinity increases density increases as well. They also examine the different densities of air. They discuss the amount of water displaced by large ships.
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LAB: Temperature Inversion - Pollution Simulation
Students, after identifying and examining the relationship of temperature and air masses in association with smog and pollution, create a temperature inversion in a long aquarium jar. They experience what happens when smog builds up and...
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What Do You Think About Sharks?
Fourth graders explore sharks. They read a story about sharks and act out using Reader's Theater. They discuss fact and attitude statements about sharks and complete a Shark Survey. They create a shark promotion brochure informing...
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Water Density
Students identify and analyze the concept of density using the formula, density equals mass divided by volume. They review the differences in salinity levels of the ocean and note that the changes in density are caused by wind and...
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WorldWatcher Activity: Investigating Population and Carbon Emissions
Students develop a population density visualization chart to begin the lesson. In groups, they use this information to compare to rates of carbon emissions for their country. They identify solutions to the problem and present their...
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The Floating Golf Ball
Fourth graders discuss density. In this floating golf ball lesson students complete a lab activity on density while working in groups.
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Hunting and Gathering in the African Rain Forest
Students demonstrate their knowledge of the Mbuti people hunting and gathering in the African rain forest by writing a story about a Mbuti hunting or gathering food.
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Galapagos Rift Expedition Come On Down!
Students research the development and implementation of a research vessel/vehicle used for deep ocean exploration. In this oceanography lesson, students calculate the density of objects by determining the mass and volume.
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Out Of Sight Air; Weather
Fourth graders conduct an experiment to get them thinking about the invisibility of air, and to prove that air has weight.
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Hurricanes
Students state and directly experience two laws of Physics (Law of Gravity, Law of Centrifugal Force) that affect weather. They explain the observations made when using the "hurricane machine" and relate them to other events and phenomenon.
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What is Temperature?
Students examine how temperature is the measure of the average kinetic energy of the molecules of a substance.
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Glacier Climbing
Students discuss glaciers and the current distribution of glaciers around the Earth. They create simulated glaciers using cornstarch, shoeboxes, water, and pebbles.
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Physical Difference and Classification
Students use a microscope and observation skills to compare and contrast several physical properties and develop a classification system.
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