SOLAR SYSTEM SCIENCE - Lawrence Hall of Science

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2. Open an Image a. Open the Moon image by clicking on the “Open” file icon in the upper left corner of your screen: Another way to open a file is to use the “Open” command in the “File” menu. c. Find the image named “craters000314.fts” and open it. You should see the image shown at right. The circular features are craters— places where objects have violently slammed into the Moon. Question 1. Looking at the image, what can you deduce about the objects that slammed into the Moon? 6 Global Systems Science — Solar System Science — Chapter I The Moon: Our Closest Neighbor
3. Pixels and Coordinates Question 2. The word “pixel” is short for “picture element” Describe in your own words what you think that means. Each pixel in an image can be located or identified by numbers that are called the pixel’s (x,y) coordinates, This is exactly the same way that points on a graph are identified. The X-coordinate of a pixel is how many pixels it is horizontally from the lower left corner of the image. The y-coordinate of a pixel is how many pixels it is up from the lower left corner on the image. hence the coordinates of the lower left corner pixel is (0,0), also called the “origin.” In HOU IP 2.0, the (x,y) coordinates for the current position of the cursor on the image are shown in the right part of the Toolbar: In this example, X: 323 means the cursor is 323 pixels to the right of the origin, and Y: 271 means the cursor is 271 pixels above the origin. X: is the pixel number (coordinate) from left to right Y: is the pixel number (coordinate) from bottom to top For SalsaJ users In Salsa J, the coordinates are indicated indicated in the upper left just below the toolbar. Notice what happens to the coordinate numbers as you move your mouse around on the image. Solar System Science — Chapter I. The Moon: Our Closest Neighbor 7
Page 1 and 2: Lawrence Hall of Science University
Page 3 and 4: Solar System Science Contents I. Th
Page 5: I. The Moon: Our Closest Neighbor I
Page 9 and 10: Factor is a mathematical term havin
Page 11 and 12: Barringer Meteor Crater in Arizona
Page 13 and 14: I-C. Moon Measure moon1.fts: 1. Moo
Page 15 and 16: Using the Slice Tool a. Select the
Page 17 and 18: I-E. Moon Phases 1. Observing the M
Page 19 and 20: II. Comets II-A. How Long is a Come
Page 21 and 22: 5. Color Palette Bar. In the “Vie
Page 23 and 24: II-B. Comet Set When we observe the
Page 25 and 26: II-C. Comet Motion In order to dete
Page 27 and 28: Question 35. Explain the difference
Page 29 and 30: III. Asteroids As you know by now,
Page 31 and 32: Question 39. Which object is astero
Page 33 and 34: IV. Planets IV-A. Jupiter and Its M
Page 35 and 36: 3. The radius of Io’s orbit. Open
Page 37 and 38: IV-C. Planet Survey 1. Use your web
Page 39 and 40: 3. Using the Image Processor to mea
Page 41 and 42: B. What is the distance between Tit
Page 43 and 44: Solar System Science — Chapter IV

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