6 Physical Science Light

BUILDING BLOCKS OF SCIENCE LIGHT

科学之光的基石

WHAT IS LIGHT? Have you ever wondered how you see? Or where colors come from? In order to see, you need me! I'm Light!

什么是光？你有没有想过你是怎么看到东西的？ 或者颜色是从哪里来的？ 为了看，你需要我！我光!

I'm a kind of energy! I travel in a straight path until I hit an object. Then I bounce off that object and travel toward you... RIGHT INTO YOUR EYES! I'm a part of your everyday life. Let's see how!

我是一种能量！我沿着直线运动，直到撞到一个物体。 然后我被那个物体弹开，朝你飞来…… 直视你的眼睛！我是你日常生活的一部分。 让我们来看看！

Natural light comes from the sun. It looks white to you. This is the light that allows you to see. Without light, you would not have food to eat or air to breathe. That's because plants and many kinds of ocean life use light from the sun to make food and oxygen.

自然光来自太阳。 你觉得它是白色的。这是让你看到的光。 没有光，你就没有食物吃，没有空气呼吸。 这是因为植物和许多海洋生物利用来自太阳的光来制造食物和氧气。

All the food you eat and the oxygen you breathe can be traced to these living things, and therefore to me! The energy in fuels also comes from sunlight. Fossil fuels are made from the remains of living things that died millions of years ago. People use these fuels to produce electric power and to operate machines. All the energy in these fuels originally came from sunlight.

你吃的所有食物和呼吸的氧气都可以追溯到这些生物，因此也可以追溯到我！燃料中的能量也来自阳光。 化石燃料是由数百万年前死亡的生物遗骸制成的。 人们使用这些燃料来发电和操作机器。 这些燃料中的所有能量最初都来自阳光。

WHAT ARE LIGHT WAVES? Light can travel through air, water, and space. But I move differently than you. I move like a wave. A light wave! Like ocean waves, light waves are a series of peaks and valleys. A peak is like the top of the wave. A valley is the low point.

什么是光波？光可以穿过空气、水和空间。 但我的动作和你不一样。 我像波浪一样移动。一个光波！像海浪一样，光波是由一系列波峰和波谷组成的。 山峰就像波浪的顶端。 山谷是低点。