by STAO ADMIN | Nov 14, 2019
The demonstrations/activities in this resource have been designed to challenge students’ thinking as well as initiate lively classroom discussions that support constructivist learning. These short demonstrations/activities often involve discrepant events,...
by STAO ADMIN | Nov 14, 2019
The Doppler Effect, when applied to light from a star, can be used to determine if the star is approaching or receding. This is the basis for the generally accepted theory that the universe is expanding. This demonstration shows the Doppler Effect applied to sound....
by STAO ADMIN | Nov 13, 2019
This demo demonstrates the greenhouse effect by comparing the air temperature of a room with the air temperature inside a clear plastic bag containing black construction paper. The bag models the Earth’s atmosphere and the black construction paper models...
by STAO ADMIN | Nov 13, 2019
This demo models how convection occurs in the atmosphere and hydrosphere by showing what happens at the interface of a hot fluid and a cold fluid. This simulates what happens when cold and hot air masses meet, as well as why/how the ocean regulates climate.
by STAO ADMIN | Nov 12, 2019
Since the distances to the stars cannot be measured directly, astronomers use a variety of techniques including triangulation and parallax, comparison of absolute and apparent magnitude, and Cepheid variables. Triangulation is an indirect method of measuring the...
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