In this video David explains what constructive and destructive interference means as …
In this video David explains what constructive and destructive interference means as well as how path length differences and pi shifts affect the interference. Created by David SantoPietro.
In this activity, students construct three-dimensional models from terrain information provided by …
In this activity, students construct three-dimensional models from terrain information provided by two-dimensional topographic maps. This will allow them to visualize how changes in elevation over a certain distance can be represented on a flat piece of paper that can be folded up and tucked away. Each group is responsible for constructing a model of Mount St. Helens 'before' and 'after', a depression, a stream, and a hill. Discussion questions related to the different representations are also included.
This video segment adapted from the Atmospheric Radiation Program explains the differences …
This video segment adapted from the Atmospheric Radiation Program explains the differences in the formation of tropical convective cloud systems over islands and over the ocean.
In this video segment, ZOOM guest Cassie takes us on a tour …
In this video segment, ZOOM guest Cassie takes us on a tour of the coral reef near her home in Key Largo, Florida, and points out some of its unique features.
In this video segment adapted from NOVA, scientists search for carbonized remains …
In this video segment adapted from NOVA, scientists search for carbonized remains of plants preserved in lava flows to find out how long it has taken rain forests on Hawaii to regenerate after a volcanic eruption.
In this activity, students measure the densities of samples of granite, basalt, …
In this activity, students measure the densities of samples of granite, basalt, peridotite/dunite, and an iron meteorite, which are used as representatives of the various layers of the Earth (crust, mantle, core). The samples are weighed to determine their mass, and the Archimedes Principle is used to determine volume. From these two properties, they calculate density, compare it to accepted values presented in the discussion, and answer questions about their observations.
This lesson provides experience working on a real-life scenario by allowing students …
This lesson provides experience working on a real-life scenario by allowing students the opportunity to use topographic maps to design a hiking trail system based on access from road, range of habitats, and other specified criteria. They will also complete a data sheet and produce an informational brochure.
The index of refraction in a material isn't always the same for …
The index of refraction in a material isn't always the same for every wavelength. This is how prisms split white light into so many colors. Created by David SantoPietro.
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