Setiap pagi, Nurul melihat wajahnya di cermin sebelum ke sekolah. Pada waktu malam, Bulan kelihatan terang walaupun ia tidak mengeluarkan cahaya sendiri. Kedua-duanya berkaitan dengan pantulan cahaya.
光的反射 = pantulan cahaya
光照到光滑、发亮的表面会被弹回来，这叫光的反射。这个单元学习反射的现象、它在生活中的用途，以及怎样画光线图。
例子：照镜子看到自己，月亮反射太阳光而发亮。
注意：月亮本身不会发光。
reflection of light = pantulan cahaya
When light hits a smooth, shiny surface it bounces back; this is reflection. This unit covers reflection, its uses in daily life and how to draw ray diagrams.
Example: seeing yourself in a mirror; the Moon shining by reflecting sunlight.
Watch out: the Moon does not give out its own light.
Kenali
Apakah pantulan cahaya?
Cahaya dipantulkan apabila mengenai permukaan yang licin dan berkilat seperti cermin, sudu besi dan air yang tenang.
Contoh: Bulan kelihatan bercahaya kerana memantulkan cahaya Matahari ke Bumi.
what reflection is = apakah pantulan
Light is reflected when it hits a smooth, shiny surface such as a mirror, a steel spoon or still water. We see the Moon because it reflects sunlight to Earth.
Example: a calm lake mirrors the trees around it.
Watch out: rough, dull surfaces reflect very little light.
Pilih semua
Pilih semua permukaan yang memantulkan cahaya dengan baik.
找反射好的表面 = cari permukaan
能把光反射得好的表面，要光滑、发亮。粗布和旧木板都很粗糙。这题有几个答案。
例子：新的铝箔纸也能反射光。
注意：颜色深浅不是重点，重点是光滑和发亮。
good reflecting surfaces = cari permukaan
Good reflectors are smooth and shiny. Rough cloth and dull wood are not. There are several answers.
Example: new aluminium foil also reflects light.
Watch out: smoothness and shine matter most.
Fahami
Kegunaan pantulan cahaya
Pantulan cahaya digunakan dalam pelbagai alat:
cermin sisi kenderaan
cermin cembung di selekoh
cermin pergigian
periskop
Contoh: Doktor gigi menggunakan cermin pergigian untuk melihat bahagian belakang gigi pesakit.
反射的用途 = kegunaan pantulan
侧镜（cermin sisi）让司机看到后面的车；凸面镜（cermin cembung）装在路口转角，看见另一边的车；牙医镜（cermin pergigian）看牙齿后面；潜望镜（periskop）让人从低处看到高处的东西。
例子：牙医用小镜子看病人的后牙。
注意：这些工具都靠镜子反射光。
uses of reflection = kegunaan pantulan
Side mirrors (cermin sisi) let drivers see cars behind; convex mirrors (cermin cembung) at road corners show traffic round the bend; dental mirrors (cermin pergigian) show the backs of teeth; a periscope (periskop) lets you see over obstacles.
Example: a dentist uses a small mirror to see the back teeth.
Watch out: all these tools rely on mirrors reflecting light.
Padankan
Padankan alat dengan kegunaannya
配对用途 = padankan kegunaan
潜望镜让人看到墙后面或高处；凸面镜装在弯路口；牙医镜看后牙。
例子：潜水艇用潜望镜看海面。
注意：先想每样工具在哪里用。
matching uses = padankan kegunaan
A periscope lets you see over a wall; a convex mirror is placed at a bend; a dental mirror shows the back teeth.
Example: a submarine uses a periscope to see the sea surface.
Watch out: think where each tool is used.
Kemahiran
Melukis gambar rajah sinar
Gambar rajah sinar dilukis dengan garis lurus menggunakan pembaris. Letakkan anak panah untuk menunjukkan arah cahaya dari sumber ke cermin, kemudian ke mata.
Contoh: Cahaya lampu → cermin → mata: dua garis lurus dengan anak panah menunjukkan arah.
drawing ray diagrams = gambar rajah sinar
Ray diagrams use straight lines drawn with a ruler, with arrows showing the direction of light: from the source to the mirror, then reflected to the eye.
Example: lamp → mirror → eye: two straight lines with arrows.
Watch out: missing arrows or curved lines are wrong.
what a ray diagram needs = keperluan rajah
Light travels straight and has a direction. How must the diagram show both?
Example: drawing sunlight reaching the ground also needs straight lines with arrows.
Watch out: it need not be pretty, only accurate.
Ringkasan
Syabas!
Pantulan cahaya
Cahaya dipantulkan oleh permukaan licin dan berkilat. Bulan memantulkan cahaya Matahari. Pantulan digunakan dalam cermin sisi, cermin cembung, cermin pergigian dan periskop. Gambar rajah sinar menggunakan garis lurus dan anak panah.
