can anyone tell me how can i demonstrate solar and lunar eclipse in the class and what materials should i use?

Question

please help me, i need it for my science subject... please... please.. please... thanks a lot! ;)

Answer 1

Very good question.

Earth passes through a straight line between the sun and moon casting a shadow on the moon during a lunar eclipse. Some here instructed you to demonstrate a solar eclipse by passing the moon between the sun and earth.

Gather a flashlight and two different size balls. The larger ball represents earth and the smaller ball represents the moon.

To demonstrate a lunar eclipse, shine the light on the smaller ball and slowly pass the larger ball between the flashlight and smaller ball. You will have to adjust the distances between the balls and distances between the flashlight and earth ball because you want all of the light to be blocked by earth. (Physics determines that not all light is blocked which is why you still see the shape of the moon during a lunar eclipse.)

To demonstrate a solar eclipse, shine the light on the larger ball and slowly pass the smaller ball between the flashlight and larger ball. Again, you will have to adjust the distances between the balls and distances between the flashlight and moon ball because you want all of the light to be blocked by the moon. (The sun is a bright celestial body. So bright that during a solar eclipse a white fringe is observable at the edges of the moon during a solar eclipse. This is a phenomena known as refraction where light is "bent" as it passes near the moon.)

You should be prepared to be asked during your presentation what part of the lunar cycle an eclipse will occur: during the first quarter moon? full moon? last quarter moon?

Good luck!

Answer 2

You`ll need to get some classmates to help you...

Materials:
Large flashlight
Basketball (Earth)
Tennis (Moon)
Solid rod of wood or metal

Procedure:
Attach the tennis ball to the solid rod to increase ease of movement.
One student holds Earth, slanted on its axis.
Another student holds the Moon, revolving around Earth.
Another student is responsible for shining the Sun.

Day and Night:

Turn off the lights to the classroom, and turn on the flashlight to represent the Sun shining on Earth.
Pick a spot on the Earth to be where the classroom is. The student holding Earth rotates Earth about its axis (ignore the revolution about the sun). Note how the chosen point enters phases of light and dark as the Earth rotates.

Solar Eclipse:
Have the student holding the Moon position the moon such that it is blocking the Sun's light from reaching the Earth.
Explain that, although the Earth is much bigger than the Moon, the distance between the Moon and Earth allow the Moon to entirely block out the Sun's rays.
Also explain that, since the Earth is rapidly rotating, the eclipse lasts only a short amount of time, and that, after the eclipse, the moon begins to unblock the Sun.
Explain that, because of the complex 3-dimensional revolution of the Moon around the Earth, such an occurrence is very rare.

Moon and Lunar Eclipse:

Place the marked "classroom" spot on Earth facing away from the Sun, such that it is nighttime.
Have the student holding the Moon place it in front of the Earth, in the same way done during the Solar Eclipse demonstration.
Note that ½ of the Moon is lit by the Sun, but the "classroom" cannot see any light being reflected by the Moon. This is a New Moon.
Have the student holding the Moon then place it on either side of the Earth. Also note that ½ of the Moon is still lit by the Sun, but the "classroom" can only see ½ of the lit section, and thus it is a Quarter Moon.
Have the student with the Moon hold it above and behind the Earth, such that light from the flashlight can be seen on ½ of the Moon. Explain that, under normal circumstances, this would be a full moon, as the "classroom" can see exactly ½ of the Moon's surface
Then, have the student holding the Moon lower it directly behind the Earth. Show that, during this configuration, the Earth entirely blocks out the Sun's rays from the Earth, and the light reflecting on the moon is reduced to nothing.
Explain that, because of the complex 3-dimensional revolution of the Moon around the Earth, such an occurrence is very rare.

Answer 3

Well, if you want to demonstrate it while it is happening- and this only really works for a solar eclipse or if a planet is in front of the sun- you should get this nifty little solar telescope called a SunSpotter. It cost a pretty penney - usually somewhere around $350- but it is pretty cool. For example, a few years ago, Venus crossed in front of the sun and we were able to see it projected on a small piece of paper. If you want to demonstrate the concept,- this is much easier and cheaper- all you need is a flashlight, a medium-sized ball, and a smaller one to copy a lunar eclipse. You just have to use the flashlight to mmimic the suns light and makee the shadow of the medium ball cover the smaller one. For a solar eclipse, you will need a medium sized ball, a smaller one, and a flashlight.The flashlight will be the sun and all you have to do is move the smaller ball in front of the flashlight. Good Luck!

Answer 4

Directions: Using a small styrofoam ball, a pencil, a lamp, and your head, let's try to understand how eclipses work.

What is a lunar eclipse?
What is a solar eclipse?

We can understand eclipses by creating models of the Sun, Moon, and Earth.

1. Place a lamp at the front of the room and turn it on. (Remove the lampshade, please.)
2. Stick a pencil into your styrofoam ball so you can easily hold it.
3. Turn off the lights.
4. Stop playing around.
5. Face the lamp, holding your pencil/ball at arm's length. The lamp represents our Sun, the
styrofoam ball the Moon, and your head the Earth.

Move the “moon” around your head to model its revolution around the Earth. Position the moon so it's directly opposite the Sun, with your head casting a shadow on it. When the Moon passes into the Earth's shadow, we have a lunar eclipse.

Answer 5

Assuming you're model is of only Earth and it's Moon (sometimes called "Luna")

You will need a focused lightsource (maglight, any flashlight with a bean adjustment)

If your moble has only the Earth and Moon plus the sun (lightsource) make sure the angles are correct in relation to the bodies present. What Earth season are you trying to shoot for? Remember this is a snapshot of a single moment in time.

I use styro balls to make planetary bodies. Hang them from very fine fishing line and they look like they are floating! Hang them from the ceiling observing the proper plain of the eccliptic with relation to the sun and planets at the particular date you are demonstrating.

Paint the styro balls of differing sizes to match the celestial body you intend to recreate, Do the math involved and scale your model verbatim. You will probably need help with the Geometry/Trig/polynomials that are necessary but your professor will help with that.

Once you have your setup finished, it's cake! - Hang the mobile you made in the optimum spot and turn on your flashlight (the sun). You'll have to do a little ajdustment period but you will get it right!

now all you do is make sure your "sun" hits the "earth" just how you envision it in space pictures you have seen. As you rotate your moon around planet Earth, the phenomenon will become apparent as the moon goes behind the styro-foam earth you will see it turn dark.

School supply stores and arts and craft stores have all the equipment you need. Good Luck! This was one of my favorite projects when i was in school!

Solar Eclipse works just the opposite: You move the moon instead of Earth to cast the shadow over Earth in sttead of the moon. The "Sun" (maglight, flashlight) is stationary.

Hope this helps. I got excellent marks on all my science projects becasause I love science and discovery.

Answer 6

Golf ball to represent the Moon, Tennis ball to represent the Earth, basketball to represent the Sun. Bright flashlight or desk lamp to use as sunlight. Align Sun, Earth and Moon, then shine light from close to, but from above basketball toward the Earth. Earth prevents light from reaching Moon. This is a Lunar eclipse.
Align Sun, Moon and Earth so that the light causes the shadow of the Moon to block out the light from reaching Earth. You may have to move the Tennis ball farther away from the golf ball to show this effect, since its diameter is so much smaller. Solar eclipse.

Answer 7

One way to show the eclipse of any object is to show shadows. Try using a small LED flashlight in a tube that restricts the light to a beam. then using either two balls or disks of different sizes, but larger than the beam of your light source. (for solar eclipses) If the smaller ball is just a little larger than your light source and the other ball is at least twice as large then you can hold the smaller ball closer to the light source when you move it in front of the larger ball you will see not only the shadow of a full eclipse but the partial eclipses as well. (for lunar eclipses reverse the balls with the larger ball in front of the smaller ball.) Be sure that you give your self enough room between the light source and your first ball for the light to expand a little. for ease of handling your ball should not be more than about 5" in diameter. Play with it and as always have fun.

Answer 8

demonstrate solar lunar eclipse class materials

Answer 9

Use two different size balls to represent the earth and moon. Make a moon, maybe a ping pong ball, and an earth, something like a softball or larger, soccer ball, basketball, etc. Use a flashlight as the sun. Shine the flash light at the earth, and move the moon around the earth, and the sun and moon will will eclipse.

Answer 10

Get a ball of some sort. Not too big, and shine a flashlight , in a darkened room of course onto the ball. Go along the front of the ball. With the class behind the ball, they should be able to see when the light disappears and when it starts to show on the other side of the ball.For a Lunar, just go the other way.
Good luck !!