Stuck in someone else's frames? break free!
- MOON - PLANETS - STARS
Draw a 20
inch diameter circle on a chart or chalkboard.
a 5 inch diameter circle 4 feet away from the
the various tides from the longitudinal positions
you might say that from position 1, the tide
be able to tell that there are 12 hours between
globe of the earth, and a ping-pong ball to
As you turn
the globe and move the ball, gesture with your
Try to carry
a shallow pan of water across the room without
The sloshing motion is similar to the motion set up in great ocean basins around the world (e.g., the Bay of Fundy).
Use models of the sun, moon, and earth to show that:
1) when the sun and moon are in line, their gravitational influences combine to produce the highest possible tides (spring tides);
2) when they are at right angles to each other, their influences divide and produce lower tides (neap tides).
If your books tell you which directions (orbits) the planets go, you can see how the planets revolve around one star, our sun. Is our sun a star? How do we know that?
called moons, also reflect light, but they
and moons orbiting around the sun make up the
How many planets are there?
How many stars are there? Probably, bazillions. Any person who is smart enough to be able to count that high is too smart to waste his or her time doing that. Bazillions is as good a word as any.
Is the universe the same thing as the galaxy?
Since I'm so nice (and brilliant), I will explain the difference: Galaxy is any of numerous large-scale aggregates of stars, gas, and dust, having one of a group of more or less definite overall structures, containing an average of 100 billion solar masses, and ranging in diameter from 1,500 to 300,000 light-years. The Milky Way is a galaxy.
Universe refers to all existing things, including the earth, the heavens, the galaxies, and all therein regarded as a whole. (Both definitions are from the American Heritage Dictionary.)
be interested in researching information on other
Any problems with this page? Send URL to webmaster. Thank you!
We publish two newsletters a couple of times a month. To subscribe, send a blank email to the appropriate email address. Topica will send you a message asking if you really intended to subscribe - just click reply - that's it!
Free Recipe Collection Newsletter:
Jewish Recipe Collection Newsletter:
Tired of Geek Speak when