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Modeling Glacial Features With Sand
Book Chapter |
In this investigation, students make a model of the different erosional features of valley and continental glaciers out of sand and determine their impact on topography and hydrology.
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Aquatic Macroinvertebrate Identification
Book Chapter |
Everyone is familiar with terrestrial insects such as dragonflies, houseflies, mosquitoes, and beetles, but many of us are unaware that several insects live in the water during their larval stages. These insects are…
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Factors That Affect Eutrophication
Book Chapter |
In this investigation, the effects of excess nutrients (nitrate and phosphate) on algae will be examined. An excess of these nutrients can lead to eutrophication in ponds and lakes. Eutrophic lakes typically are shallow…
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Book Chapter |
This investigation consists of two parts, in which students first model the effects of groundwater contamination and then track the flow of the contamination. However, Part I does not have to be done in order to do Part…
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Glacial Features of a Watershed
Book Chapter |
The objective of this investigation is for students to learn how glaciers shaped a watershed.
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Book Chapter |
This investigation gives students the opportunity to view the outside world and bring science into the field. Teaching students how to identify plants gives them a greater appreciation for nature, just as learning to…
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Book Chapter |
Learning how to delineate a wetland using official criteria can be an enlightening experience for students and teachers. The objective of this investigation is for students to delineate the boundaries of an area in a…
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Book Chapter |
In this investigation, students will select, identify, and test a common plant for allelopathy by extracting the plant’s natural chemicals and measuring the effect on the germination of lettuce seeds. They will analyze…
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Book Chapter |
When humans change the natural topography, certain effects are likely to be seen in a watershed. The transportation of water and sediment increases when streams are straightened and, with the increased flow rate of…
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Book Chapter |
Streamflow, or discharge, is defined by the U.S. Geological Survey (USGS) as the volume of water flowing past a fixed point in a fixed unit of time. The discharge of a stream can be affected by many things, including…
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Flood Frequency Analysis for a River
Book Chapter |
In many watersheds, the frequency of flooding has greatly increased in the past 20 years, mainly due to changes in the hydrology as a result of farming and urbanization. Human habitation of floodplains causes floods to…
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Comparison of Phosphate Levels in Stream Sediments
Book Chapter |
Phosphorus is an important nutrient to all life. Unfortunately, when phosphate reaches the soil it is not all used up by the plants. If excess phosphate enters the waterways in the watershed, it can cause increased…
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Book Chapter |
This simple but engaging activity about texture is for students in grades K–4. Textures are all around us, and they are important to our everyday activities—consider a piece of sandpaper, a cheese grater, or the soles…
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Investigating the Properties of Magnets
Book Chapter |
In this activity, younger students encounter, discuss, and apply the basic characteristics of magnets and magnetism as they explore and elaborate on their experiences. Student groups implement some of the terminology…
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Applying Simple Chromatography
Book Chapter |
This activity involves chemistry, mystery, colors, and measurement. Students observe the composition of various inks by separating them via water-based chromatography. Students use what they learn about chromatography…
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