sw2011

=Activitati propuse= >> Their game or sport must not work in a gravity field. >> **The Challenge** Your mission is to create a sport or game that people in space can play which will be interesting, exciting and fun. Your proposal for the new sport protocol must have the following: >> b) A basic description of your activity and its rules and an explanation of how it meets the basics for a sport (exercise, interesting, fun). c) A comparison of the playing of your sport on the Earth and in space. Describing the changes needed to play it anywhere (rule changes and equipment differences) >> d) How the lack of any gravity affects the rules and equipment. >> e) A mathematical analysis of the sport (middle/high school) along with or a qualitative analysis for the lower grades. >> f) Investigations of sports protocols that would not be suited to space, with reasons and supporting information why they were rejected. >> g) A fictitious news article describing the solar system’s “Championship” match for your sport or game. >> h) A drawing of the equipment and field with size or dimensions, etc. >> rings as seen from the Earth. The scale model Saturn will be a 3-D model of Saturn and its rings, with the option of adding the moon Titan to the model. A scale model "Earth" is also included for comparison with the model Saturn. >> The scale factor is 1 inch in the model represents 40,000 km in the real solar system. Sizes in the table are all given in terms of diameter and distances are >> from the center of Saturn (with the exception of the distance to the inner edge of the ring plane which is from the cloud tops). >> A 3-inch diameter ball represents Saturn and transparency film covered with a thin layer of talcum powder represents the rings. The thickness of the rings is actually too small to see on this scale, but the almost paper thin transparency film is a good approximation. Part of the intention behind using the transparency film is that it can represent empty space. The talc represents the actual particles out of which the rings are made. "Gaps" in the rings can also be shown on the film by removing the talc from portions of the film in circles. In addition, a flashlight can be used to show how well the "rings" reflect light when it shines on them. The relative appearance of the rings of Saturn at different viewing geometries can also be easily demonstrated by placing the model in front of an overhead projector, tilting it at different angles, and observing its shadow. >> You will need (for each model Saturn): >> 1. a copy of the Table of Sizes and Distances >> 2. 3 inch Styrofoam ball >> 3. 1 sheet of transparency film >> 4. orange and yellow markers >> 5. tooth picks >> 6. small candy about 1/3 inch in diameter. An >> M&M is close enough. >> 7. talcum powder >> 8. ruler >> 9. scissors >> 10. transparent tape >> 11. exact-o knife (1 for the teacher to use) >> 12. a compass for drawing circles >> 13. an overhead projector and/or flashlight >> 14. a peppercorn (optional) >> 15. string (optional) >> Time requirement: 1 to 1 1/2 hours. At least 2 for older students making their own calculations. >> 1) Using the compass (replace the pencil with a narrow tipped marker or felt tip pen) centered on the transparency film draw an inner circle with a radius of 1 2/3 inches (3 1/3 inches in diameter). >> Next draw an outer circle also centered on the transparency film 3.5 inches in radius (7 inches in diameter). For younger students you may wish to use a template and photocopy the rings onto the transparency for the student prior to the lab, or have the students trace the template. >> 5) Smooth the talcum powder over one side of the ring with fingertips or a paper towel. Talc can also be removed with a fingertip and/or a paper towel to show the major observed gap in the rings (the Cassini division). Older students can be asked to make the Cassini division to scale with the model in both location and width. >> toothpicks. >> Discuss why the rings of Saturn are sometimes very visible from the Earth and why they seem to disappear at other times. (Alternatively, an overhead projector can be used to project a silhouette of the model on the wall or a screen. The effect will be very visible for the entire class.) n
 * Proiecte ESA:
 * Observa
 * Construieste
 * ==Jocul gravitatie 0==
 * This activity is to invent a game or sport that can only be played in Zero-G. This allows students to apply their love of sports while learning physics.
 * ==Space art==
 * ==Sistemul solar reprezentat la scara (hartie igienica, teren de fotbal)==
 * **Distante Soare planeta UA**
 * Mercury 0.39
 * Venus 0.72
 * Earth 1.00
 * Mars 1.52
 * Jupiter 5.20
 * Saturn 9.54
 * Uranus 19.18
 * Neptune 30.06
 * Pluto 39.44
 * ==Reprezentare 3D - Saturn==
 * Purpose: To aid students in understanding the size of Saturn, its rings, and large moon Titan in comparison with the Earth, and the appearance of Saturn and its
 * Instructions
 * 2) Cut out the center and the outer edge leaving only a ring of transparency film between your two circles. (Here a teacher may need to make a small cut with the exact-o knife into the center of the transparency film so that the student can use scissors to cut out the center circle without cutting into the ring.)
 * 3) Take the Styrofoam ball and make sure it will fit inside the ring, If not, cut away additional material from the inside of the ring until the ball will fit with a small gap all around.
 * 4) Take the talcum powder and sprinkle it on the ring.
 * 6) Now using the yellow and orange markers color the Styrofoam ball to look like Saturn. Try to have an image of Saturn available for the students to refer to.
 * 7) Put toothpicks (4 to 6 equally spaced) around the "equator" of your Model Saturn. The placing of the toothpicks is very critical; they all must be in the same plane or a "warped" ring will be produced. I recommend lightly drawing the equator in, or that marks are made on the ball showing the student where to place the
 * 8) Place the ring on the toothpicks. Make sure all of the toothpicks are in the same plane (or at least close). Tape the ring onto the toothpicks with transparent tape on the side without the talcum powder. The talc may need to be re-applied after this step.
 * 9) The small candy (a blue M&M will do nicely) represents the Earth. Compare the size of this scale Earth with the scale model Saturn.
 * 10) Turn down the lights and point a flashlight at the model Saturn. Turn the model so the rings are on edge to the students, and are facing the students.
 * 11) Titan, the largest moon of Saturn, is about the size of a peppercorn on this scale. (Titan is bigger than the planet Mercury). Use a peppercorn to represent Titan. A red or pink peppercorn can be used to approximate the orange color of Titan. (Red peppercorns can be very fragile, so plan to have extra available.)
 * 12) Measure the string to 30 inches. Titan is 30 inches from the center of the scale model Saturn
 * ==Fotografiati cerul - Invitat Raf==
 * ==Observatii astro la scoala==