Professional Learning Podcast Treasury Lesson Plans Personal Workspace Site Search ALEXville Learning Assets Home Courses of Study

ALEX Podcasts


Save to ALEX | Share Share | Show Details
Dauphin Island Sea Lab Field Trip
Overview:
This podcast gives a brief overview of our field trip to the Dauphin Island Sea Lab.  This incredible weekend excursion provided 35 8th grade science club students a chance to explore a barrier island, view marine life hands-on, and study ecological and evironmental elements of the Gulf of Mexico.  The students participated in several activities such as trip to the local estuarium, a boat trip on the sea lab research vessel, a salt marsh trip, shark dissection, and a plankton study.  The students learned a tremendous amount about the Gulf of Mexico and Dauphin Island.  The trip was amazing and the students still talk about it today!


Save to ALEX | Share Share | Show Details
Biotic and Abiotic
Overview:
A "still picture" podcast of biotic and abiotic things found at home and at our school.  This podcast was created by 7th grade science students.


Save to ALEX | Share Share | Show Details
Water Pollution
Overview:
For this activity, stream table models are utilized. Students introduce pollutants into the sediment in the stream table. Then they introduce water into the stream table and observe the sediment and “downstream” waterway.This demonstration shows how ground pollution and upstream water pollution can be carried downstream to other bodies of water and land. The “ground” in the stream table model has been polluted with green food coloring (before the water is added). As the water passes over the polluted area, the pollution contaminates the stream, surrounding land and the larger body of water at the end of the steam. After polluted water has entered into larger bodies of water (seas, gulfs and oceans), it can be spread to other areas by the Coriolis effect. The Coriolis effect is caused by the rotation of the Earth. The effect deflects objects moving along the surface of the Earth to the right in the Northern hemisphere and to the left in the Southern hemisphere. The resulting movements can cause pollution to spread far beyond its source and affect other parts of the world.


Save to ALEX | Share Share | Show Details
Acid Rain
Overview:
In this activity, the effects that varying pH levels have on plants are tested as a way to see the importance of clean, fresh water to living things. This activity will also demonstrate that water pollution is not just a local issue, but rather a global issue. Explanation: Acid rain is a prime example of how activities in one area can have a serious effect on conditions of a global scale. Acid rain primarily results from the transformation of industrial pollutants such as sulphur dioxide (SO2) and nitrogen oxides into other compounds such as sulphuric acid (H2SO4), and nitric acid (HNO3). This transformation occurs as these pollutants are transported in the atmosphere over distances of hundreds to thousands of kilometers. For example, sulfur dioxide emissions from industrial processes and the burning of fossil fuels have resulted in extensive acid rain and accompanying water pollution problems in southeastern Canada and the northeastern US. These emissions have global implications: more than half of the acid deposition in eastern Canada originates from emissions in the United States. Even slight changes in the pH of lakes and rivers can cause the loss of fish and invertebrates which are important links in the food chain. Acid rain is also responsible for extensive loss of forest cover in that region.


Save to ALEX | Share Share | Show Details
Planet H2O- Water Pollution and the Aquatic Food Chain
Overview:
Biomagnification is the accumulation of a substance up the food chain by transfer of the pollutant in smaller organisms that are food for larger organisms in the chain. It generally refers to the sequence of processes which results in higher concentrations in organisms at higher levels in the food chain (at higher trophic levels). These processes result in an organism having higher concentrations of a substance than is present in the organism’s food. There is evidence that some carnivores at the ends of longer food chains (e.g. larger fish, birds of prey, HUMANS) can then accumulate the water pollutant from eating down in the food chain. Clean fresh water is vital to life on our planet. What can happen if our waters become polluted? How can that affect us as humans if it is happening in the water and to the organisms in that water? One of the ways pollution impacts humans is through food chains. We have to remember that we are part of the environment and as a result, part of the food chain. We eat many of the aquatic organisms, fish and shellfish, which can be detrimentally affected by water pollution.


Thinkfinity Podcasts


Save to ALEX | Share Share | Show Details

Subject: Science
Title: Seal Cam     
Description: In this Science Update, from Science NetLinks, you'll hear about how nature photographers have recruited Weddell seals to help them shoot film under the Antarctic ice. Science Updates are audio interviews with scientists and are accompanied by a set of questions as well as links to related Science NetLinks lessons and other related resources.
Thinkfinity Partner: Science NetLinks
Grade Span: 3,4,5,6,7,8,9,10,11,12



Alabama Virtual Library
Alabama Virtual Library

Hosted by Alabama Supercomputer Authority
The University of Alabama at Birmingham
The University of Alabama at Birmingham
The Malone Family Foundation
The Malone Family Foundation
Thinkfinity
Thinkfinity
Best of the Web

Web Design by: Digital Mason LLC