Sun & UV Rays Children's Activities?

Answer Sometimes it can be difficult for students to grasp the concept of the sun's invisible ultraviolet rays and their effects on humans and plant life on earth. When your class studies the sun and its ... Read More »

Top Q&A For: Sun & UV Rays Children's Activities

Activities About Refracted Rays?

Refraction occurs when light changes velocity. This velocity change happens when light enters a medium with a different refractive index than the one through which it had been traveling. The relati... Read More »

How are x-rays used?

A nurse or technician positions an X-ray film plate underneath the part of your body that has been injured and a tiny amount of radiation passes through your body, transferring an image onto the fi... Read More »

When did x-rays come out?

While researching cathode rays, German physicist Wilhelm Conrad Rontgen discovered that certain objects became transparent when the rays were aimed at them toward a photographic plate. In late 1895... Read More »

What we can do for the childrens from?

First, Europe and USA simply have got to let these people be free. An occupied country is not a free country and the children growing up there will learn to dislike the occupiers.