资讯

The different colours of light that we get from the sun What happens when light hits a raindrop Why rainbows are arch-shaped How you can create your own rainbow This resource is suitable for ...
How does a natural rainbow form? According to the National Weather Service, a natural rainbow is a meteorological occurrence resulting from the refraction, dispersion, and reflection of sunlight ...
Why it's incredible: The mountains' folded rocks form stunning rainbow patterns. As the name suggests, China's Rainbow ...
This passage 2 is read by students to test their speaking skills: "When the sunlight strikes raindrops in the air, they act like a prism and form a rainbow. The rainbow is a division of white light ...