TAKE A BOWL OF WATER AND PLACE IT NEAR A SUNLIT WINDOW. PLACE A MIRROR IN WATER AND USE A WHITE CARD AS 0SCREEN POINT.ADJUST THE MIRROR TO AN ANGLE WHERE IT PROJECTS THE COLOURS OF LIGHT ON THE SCREEN. TELL ME YOUR OBSERVATION AND EXPLAIN HOW THIS PHENOMENON OCCURS.
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Did you do this experiment? Try that first. After you DO the work we HELP.
Riya,
What you are appear to be doing is called "dry labing an experiment" in which you don't do the experiment but you fill in all the blanks and write a report as if you did. This is a no-no in science. Experiments are done to confirm a theory or to see what will happen if no theory is being tested.
Observation: When you follow the given instructions and place a mirror in a bowl of water near a sunlit window, you will observe a colorful spectrum of light on the white card used as the screen point.
Explanation: The phenomenon observed is known as a rainbow, which occurs due to the refraction and dispersion of sunlight as it passes through water droplets in the air.
Here's a step-by-step explanation of how this phenomenon occurs:
1. Sunlight consists of all the colors of the visible spectrum - red, orange, yellow, green, blue, indigo, and violet.
2. When sunlight passes through the water droplets in the air, it undergoes refraction, which means its path bends as it enters the water droplet.
3. As sunlight enters the water droplet, it slows down and bends, causing the light to change direction.
4. The light then reflects off the inner surface of the water droplet, and as it exits the droplet, it undergoes another refraction, bending even more.
5. As the light exits the droplet, it disperses into its component colors due to a phenomenon called dispersion.
6. The dispersed light then continues to travel toward our eyes, forming a circular arc of colors in the sky, known as a rainbow.
7. When you place a mirror in the water and adjust its angle, the light that enters the water hits the mirror and reflects off it onto the white card.
8. By adjusting the angle of the mirror, you can manipulate the path of the light and project the colors onto the card, creating a colorful spectrum.
It is important to note that the size, shape, and number of water droplets in the air determine the appearance and intensity of the rainbow. Additionally, the angle at which the light hits the droplets affects the size and position of the rainbow.