Cahaya daripada lampu suluh bergerak ke hadapan. Apabila laluannya tidak dihalang, cahaya sampai pada skrin dan meneranginya.
Langkah 1
Cahaya bergerak dari sumber
Cahaya daripada lampu suluh bergerak ke hadapan. Apabila laluannya tidak dihalang, cahaya sampai pada skrin dan meneranginya.
lampu suluh → cahaya → skrin
cahaya bergerak dari sumber = 光从光源出发 手电筒的光一直向前走。路上没有东西挡住时，光就能照到屏幕，让屏幕变亮。 例子：在黑暗的房间里打开手电筒对着墙，墙上就出现一个亮圆圈。 注意：光是从光源走向屏幕，不是从屏幕或眼睛射出去的。
cahaya bergerak dari sumber = light travels from the source Light from a torch travels forward. When nothing blocks its path, the light reaches the screen and makes it bright. Example: Point a torch at a wall in a dark room and a bright circle appears on the wall. Watch out: Light goes from the source to the screen; it does not shoot out of the screen or our eyes.
Langkah 2
Objek menghalang cahaya
Apabila objek legap diletakkan di antara sumber cahaya dan skrin, cahaya tidak dapat menembusi objek itu. Kawasan di belakang objek menerima kurang cahaya.
objek legap menghalang cahaya = 不透明物体挡光 把不透明的物体放在光源和屏幕之间，光穿不过它。物体后面的地方就得到比较少的光。 例子：用一本书挡在台灯前，书后面的桌面就变暗了。 注意：物体一定要放在光源和屏幕的“中间”，放在旁边挡不到光。
objek legap menghalang cahaya = an opaque object blocks light When an opaque object is placed between the light source and the screen, light cannot pass through it. The area behind the object receives less light. Example: Hold a book in front of a desk lamp and the desk behind the book turns darker. Watch out: The object must sit in between the source and the screen; at the side it blocks nothing.
Langkah 3
Bayang-bayang terbentuk pada skrin
Kawasan gelap pada skrin ialah bayang-bayang. Bayang-bayang terbentuk di bahagian bertentangan dengan sumber cahaya dan bentuknya menyerupai bentuk luar objek.
lampu → objek → bayang-bayang pada skrin
bayang-bayang pada skrin = 屏幕上的影子 屏幕上那块暗的地方就是影子。影子出现在物体背对光源的那一边，形状像物体的外轮廓。 例子：傍晚太阳在西边，你的影子就长长地伸向东边。 注意：影子只显示外形，看不到物体的颜色或上面的图案。
bayang-bayang pada skrin = shadow on the screen The dark patch on the screen is the shadow. It forms on the side of the object facing away from the light, and its shape matches the object's outline. Example: In the evening the Sun is in the west, so your shadow stretches long towards the east. Watch out: A shadow shows only the outline; it never shows the object's colour or printed pictures.
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pembentukan bayang-bayang = how a shadow forms The question asks when a shadow appears. Recall the experiment: you need light, and you need something in the path of that light. Use both conditions to test each choice. Example: Open an umbrella in the sunshine and a dark patch appears on the ground beneath it. Watch out: A shadow needs light and a blocker at the same time; neither one alone is enough.
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Apakah susunan yang sesuai untuk melihat bayang-bayang pada skrin?
susunan lampu, objek dan skrin = 灯、物体、屏幕的排法 题目问怎样排才能在屏幕上看到影子。想一想光从哪里出发、要在哪里被挡住，影子又落在哪里。顺着光走的方向检查每个排法。 例子：你站在路灯下，影子总是落在离灯较远的那一边。 注意：要按光前进的方向读排法，从光源开始读起。
susunan lampu, objek dan skrin = arranging the lamp, object and screen The question asks for the order that lets you see a shadow on the screen. Think about where light starts, where it must be blocked, and where the shadow lands. Follow the light's direction through each order. Example: When you stand under a street lamp, your shadow falls on the side away from the lamp. Watch out: Read each arrangement in the direction light travels, starting from the source.
Ringkasan
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Ingat: cahaya bergerak dari sumber; objek menghalang cahaya; bayang-bayang terbentuk pada skrin.
