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Motion in a Circle
Students study about deriving centripetal acceleration for motion at constant speed around a circle.
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Precession
Students explain how Hipparchus, around 130 BC, used a shift in the predicted location of a lunar eclipse to detect a slight shift in the path of the Sun around the sky. They examine the elliptical orbit in which the Earth travels around...
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The Sundial
Students explain the design, principle and orientation of a sundial, the type with a gnomon pointing towards the pole of the heavens. They construct a model sundial from paper.
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Stargazers And Skywatchers
Young scholars recognize the daily motion of the Sun across the sky, defining the main directions of east, west, south and north. They see how the first calendars were based on changes in the Sun's noontime elevation, and on locations of...
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Stargazers and Skywatchers
High schoolers are introduced to the apparent motion of the Sun across the sky and the way it changes in summer and winter.
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The Path of the Sun, the Ecliptic
High schoolers are introduced to the ecliptic, the zodiac and the apparent motions of the Sun, Moon and planets across the sky.
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Stargazers and Skywatchers
Students observe the daily motions of the sun and relate them to the functions of a sundial. They determine the locations of sunrises and sunsets and determine how the elevation of the sun effects temperature.
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The Path of the Sun: The Ecliptic
Pupils investigate the celestial sphere and the paths it takes in the solar system.
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Finding the Pole Star
Students study the constellations fo the Big Dipper and Cassiopeia and their use in finding the Pole Star. They realize that other celestial objects--Sun, Moon and planets--share the rotation (and hence rise and set), even though their...
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The Angle of the Sun's Rays
Students study elevation of the Sun above the horizon and the angle of the rays and their heating power.
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Accelerated Frames of Reference: Inertial Forces
Pupils examine how when applying the laws of motion to an object in an accelerating frame, using coordinates defined in such frame, one must always add an "inertial force", representing forces caused by the frame's acceleration.
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Clean Air
Students observe gas molecules in the atmosphere absorbing the light that goes through them.
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Water in the Air
Students simulate how clouds block radition and how water in the air condense around containers.
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Particulate Sampler
Students estimate the extent of particulate air pollution present in their neighborhoods.
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Heat Currents
Students using a slide made out of aluminum foil and pin holes observe visible light.
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Simple Spectroscope
Students make a spectroscope out of simple materials and are expected to view as many different light sources as possible to see the whole spectrum.
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Projecting Spectra
Students use two methods to show and study the colors in the visible spectrum.
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Analytical Spectroscope
Students using a spectroscope view different substances when heated with electricity.
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Water Prism
Students using a glass prism filled with water are able to see all of the visible colors found the sunlight.
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Wavelength and Energy
Students using a rope and other materials explore wavelengths and frequency. If time permits, more experiments can be tried.
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Collecting Electromagnetic Radiation
Students using different experiments and activities explore electromagnetic radiation and the effect on the Earth.
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Pinhole Viewer
Young scholars make a pinhole viewer to demonstrate how it inverts light passing through it which produces inverted images.
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Build Your Own Telescope
Students build a simple astronomical telescope from two lenses and some tubes.
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