Why Do Leaves Change Color绘本PDF+音频百度网盘免费下载

适合年龄

8岁左右

绘本简介

Nature is dazzling in the fall season with its colorful array of leaves. Why Do Leaves Change Color? explains the science behind this amazing transformation. Lovely photographs emphasize the beauty of trees and their foliage, and illustrations help clarify the scientific concepts. In addition to teaching students about plants and photosynthesis, this book also gives them the opportunity to study cause and effect and prepositions. Book and lesson are also available at Levels G and M.

秋天的大自然以其五颜六色的树叶而令人眼花缭乱。 为什么叶子会变色? 解释了这一惊人转变背后的科学。 可爱的照片强调树木及其树叶的美丽，插图有助于阐明科学概念。 除了向学生教授植物和光合作用知识外，本书还为他们提供了研究因果关系和介词的机会。 G 级和 M 级也提供书本和课程。

绘本节选

Why are leaves on trees different colors? What makes them change color

Leaves make food for the tree from sunlight, water, and air.

Green stuff in the leaves helps them make food. It also makes the leaves green.

Leaves are green in summer because they are making food. The tree saves some of the food for winter.

In fall, the weather changes.

The days get shorter, and the nights get longer.

Trees get l ess sunlight, so they make less food.

The leaves stop making the green color.

Other colors that were under the green start to show.

Leaves turn yellow, orange, brown, and red

Trees drop their leaves to get ready for winter.

They use the food they saved to get through the cold days and nights.

Spring comes. Ice and snow melt, and rain falls.

The Sun shines. New leaves grow on the trees.

The green leaves start making food again.

中文翻译：

为什么树上的叶子颜色不同?是什么使它们变色

树叶通过阳光、水和空气为树木提供食物。

叶子中的绿色物质帮助它们制造食物。它还能使树叶变绿。

树叶在夏天是绿色的，因为它们在做食物。这棵树为冬天保存了一些食物。

秋天，天气变了。

白天变短了，夜晚变长了。

树木获得的阳光较少，所以它们制造的食物较少。

树叶不再变成绿色。

绿色下面的其他颜色开始显示。

树叶变成黄色、橙色、棕色和红色

树木落叶准备过冬。

他们用节省下来的食物度过寒冷的白天和黑夜。

春天来了。冰雪融化，雨水降落。

阳光灿烂。树上长出了新叶子。

绿叶又开始制造食物了。