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ALEX Podcasts


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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!


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Einstein Demonstrations- Light Defraction
Overview:
This demonstration exhibits light’s wave-like characteristics. This is half of light’s duality; the other half being light’s particle-like characteristics. Using diffraction gratings we can compare the visible parts of atomic spectra for different elements. A diffraction grating consists of a large number of equally spaced parallel slits. These slits bend light differently according to wavelength. Incandescent lights work by heating a solid piece of tungsten wire. This heating of a solid produces a variety of wavelengths, giving an impressive spread of colors when viewed with a diffraction grating. Since the other lamps are single gaseous elements, they emit only a few wavelengths of light, their individual atomic spectra.


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Einstein Demonstrations- Speed of Light
Overview:
Einstein's crucial breakthrough about the nature of light, made in 1905, can be summed up in a deceptively simple statement: The speed of light is constant. So what does this sentence really mean? Surprisingly, the answer has nothing to do with the actual speed of light, which is 186,000 miles per second through the "vacuum" of empty space. Instead, Einstein had an unexpected insight: that light from a moving source has the same velocity as light from a stationary source. For example, beams of light from a lighthouse, from a speeding car's headlights and from the lights on a supersonic jet all travel at a constant rate as measured by all observers—despite differences in how fast the sources of these beams move.


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Einstein Demonstrations- Color Mixing
Overview:
Mixing color light is called additive color mixing, because the combined colors are formed by the adding of light from two or more light sources together. Two or more lights added together will give more illumination than any of the lights by themselves. The primary colors of light are red, green and blue.


Thinkfinity Podcasts


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Subject: Science
Title: Solar Blind     
Description: In this Science Update, from Science NetLinks, you'll hear about a device for measuring light that can withstand the intensity of the Sun's rays. 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: 6,7,8,9,10,11,12



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Subject: Science
Title: Dryer Sheets     
Description: In this Science Update, from Science NetLinks, you'll hear how the old saying opposites attract relates to your laundry. Positively charged particles are attracted to negatively charged particles, which can cause static cling in clothing. 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: 6,7,8,9,10,11,12



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Subject: Science
Title: Predicting Earthquakes     
Description: In this Science Update, from Science NetLinks, you'll hear about the development of a tool designed to predict California's next big earthquake. 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



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Subject: Science
Title: Cell Phone Traffic     
Description: In this Science Update, from Science NetLinks, you'll hear about a new use for cell phone signals. Many people stuck in traffic pass the time or take care of business by making calls on their cell phone. Now, scientists have found another way to put that talk time to work by using cell phone signals to monitor traffic flow. 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: 6,7,8,9,10,11,12



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Subject: Health, Science
Title: Reading in the Dark     
Description: In this Science Update, from Science NetLinks, you'll hear about the possible effects of reading in low light. 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



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