Leaves are green in summer because they are making food. Leaves also have orange, yellow and brown colors inside them. During summer, those other colors are hidden by the green color. Do you know? the same chemical that makes...
Why are the leaves on trees different colors? What makes them change color? Leaves use sunlight, water, and air to make food for the trees. This way of making food is called photosynthesis. Photosynthesis is important to animals as well as plants. Some animals eat plants. Other animals eat...
Why does the sky change colors?What is the sky?How high is it?What color is it?What birds can live above it?These questions are difficult to answer,aren't they?In fact,the sky has no color.Then why does the sky look blue?We know that there is air around the world.When planes fly...
Why are the leaves on trees different colors? What makes them change color?Leaves use sunlight, water, and air to make food for the tree. This way of making food is calledphotosynthesis(光合作用)._16_ Photosynthesis is important to animals as well as plants Someanimals eat plants. Other ...
阅读理解Why does the sky change colors?What is the sky? How high is it? What color is it? What birds can live above it? These questions are difficult to answer, aren't they?In fact, the sky has no color. Then why does the sky look blue?We know that there is air around the wor...
We there is a will there is a. We put up quite a lot of. Pair work. Do the following task in pairs. How do you greet people when you meet them. Do you seek their hands? Do you kiss their face? How will people greet you if you travel to different country. Here are some of ...
The eyes have it. Your peepers perceive color using structures called cones. Your retinas bristle with about 5 million cones each, made up of three types that specialize in seeing different colors [source: Schirber]. Although each kind of cone is most sensitive to certain peak wavelengths, ...
emits all types of electromagnetic radiation, most of the sunlight comprises visible light, ultraviolet rays, and infrared rays (heat). You might remember from your high school science class that sunlight is white because it consists of all seven colors of the rainbow, each with different ...
different wavelengths, which is why we see color. Bluer light more easily bounces off molecules in the air, while redder light doesn't. That's because bluer light has shorter wavelengths while redder light has longer wavelengths. The blue light gets more easily scattered,which is why the sky...
True, sunlight doesn’t usually have much color. However, sunlight does contain all the colors of the rainbow: red, orange, yellow, green, blue and violet. But when all these colors mix together, we see little color. That’s why sunlight normally looks pale.