Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astrosociety.org/edu/publications/tnl/40/saturn.pdf Дата изменения: Tue Oct 2 12:16:15 2012 Дата индексирования: Sun Feb 3 16:07:37 2013 Кодировка: Поисковые слова: с р с р с р с с р р с п п с

Making Satur n's Rings
Space between Saturn and the `C' ring 14,180 km wide

Side View

`A' Ring 14,610 km wide Cassini division 4,650 km wide `B' Ring 25,520 km wide `C' Ring 17,490 km wide Saturn 60,330 km wide

Plan View

1

To draw your model's rings with the same proportions as Saturn's actual rings, you must scale down the size of the rings from kilometers to centimeters. Your teacher will either ask you to calculate the scaled size of Saturn's rings or give the numbers to you. Name of feature Actual width
km

2

Use the scaled widths in the chart to draw Saturn's rings on a transparency with a pencil and compass. They should look like this when your are finished:

Scaled width
cm

`A' ring Cassini division `B' ring `C' ring Space between Saturn and `C'ring

14,610 4,650 25,520 17,490 14,180 As you can see from this diagram, you must draw five circles. The radius of the first (smallest) circle will be the radius of your grapefruit Saturn (4.5 centimeters) plus the space between Saturn and the `C'Ring (1.0 centimeter). So, set your compass to draw a circle of radius 5.5 centimeters. The radius of the second circle will be the radius of the first circle (5.5 centimeters) plus the scaled width for the `C' Ring. What is the radius of the third circle? Cut Away

1.0 example

3
· · · ·

Paint your rings to look like Saturn's rings as follows: The `A' ring is translucent, so paint it lightly The Cassini division is almost empty, so don't paint it at all. The `B' ring is almost opaque, so paint it heavily. The `C' ring is translucent, so paint it lightly, like the `A' ring.