Gunakan lampu suluh LED dan dinding kosong. Pastikan lantai tidak bersepah, jangan halakan cahaya ke mata dan lakukan aktiviti bersama orang dewasa jika bilik digelapkan.
Langkah 1
Sediakan kawasan yang selamat
Gunakan lampu suluh LED dan dinding kosong. Pastikan lantai tidak bersepah, jangan halakan cahaya ke mata dan lakukan aktiviti bersama orang dewasa jika bilik digelapkan.
lampu LED + dinding kosong + ruang kemas
kawasan yang selamat = 安全的场地 用 LED 手电筒和一面空白的墙来做手影。地上要收拾干净，不要把光照向眼睛；房间关暗时，要有大人陪着。 例子：先把地上的玩具和书包收好，才拉上窗帘开始玩。 注意：LED 手电筒不太热，比蜡烛安全，但强光直射眼睛仍然会伤眼。
kawasan yang selamat = a safe area Use an LED torch and a blank wall for hand shadows. Keep the floor clear, never shine the light into anyone's eyes, and have an adult present when the room is darkened. Example: Put away toys and school bags on the floor before closing the curtains to play. Watch out: An LED torch stays cool and is safer than a candle, yet a strong beam in the eyes can still hurt them.
Langkah 2
Bentuk corak dengan tangan
Letakkan tangan di antara lampu dan dinding. Ubah kedudukan jari perlahan-lahan untuk menghasilkan bentuk haiwan atau corak yang berlainan.
lampu → tangan → corak bayang-bayang pada dinding
corak dengan tangan = 用手做图案 把手放在灯和墙的中间。慢慢改变手指的位置，就能做出不同的动物或图案。 例子：两手拇指勾在一起，其余手指张开，墙上就出现一只飞鸟。 注意：手要一直留在光束里，手一移出光的范围，墙上的影子就不见了。
corak dengan tangan = patterns with your hands Place your hand between the lamp and the wall. Change the position of your fingers slowly to make different animals or patterns. Example: Hook your two thumbs together and spread the other fingers, and a flying bird appears on the wall. Watch out: Keep your hand inside the beam; once it moves out of the light, the shadow disappears.
Langkah 3
Perhati kesan jarak
Gerakkan tangan lebih dekat kepada lampu kemudian lebih dekat kepada dinding. Bandingkan saiz dan kejelasan bayang-bayang pada setiap kedudukan.
ubah jarak tangan → saiz dan kejelasan berubah
kesan jarak = 距离的影响 手靠近灯时，影子变大、边缘变模糊；手靠近墙时，影子变小、比较清楚。比较每个位置的大小和清楚程度。 例子：在投影机前举手，手离机器越近，银幕上的手影越大。 注意：很多学生以为离灯近影子会变小，其实刚好相反。
kesan jarak = effect of distance When your hand is near the lamp, the shadow becomes bigger with blurry edges; near the wall, it becomes smaller and sharper. Compare size and clearness at each position. Example: Raise your hand in front of a projector; the closer it is to the machine, the bigger the shadow on the screen. Watch out: Many pupils think moving nearer the lamp makes the shadow smaller, but the opposite is true.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Apakah sumber cahaya yang selamat untuk aktiviti bayang-bayang tangan?
sumber cahaya yang selamat = 安全的光源 题目问做手影时哪种光源最安全。小孩的手会靠近光源，所以想一想：哪种会烫手、会着火？哪种不会？ 例子：露营时帐篷里用电池灯，不点蜡烛，以免烧到帐篷。 注意：selamat 是这题的关键字，不是选最亮的光源。
sumber cahaya yang selamat = a safe light source The question asks which light is safest for hand shadows. Your hand will be close to the light, so think about which sources get hot or could start a fire and which do not. Example: Campers use a battery lantern inside a tent instead of a candle so the tent cannot catch fire. Watch out: The key word is selamat, meaning safe, so do not simply choose the brightest source.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Di manakah tangan perlu diletakkan?
kedudukan tangan = 手的位置 题目问手要放在哪里，墙上才会出现手影。想一想光从灯出发走到墙，手要在哪一段路上才能挡住光。 例子：同学走进投影机的光束里，银幕上马上出现他的身影。 注意：手如果不在光走的路上，就挡不到光，墙上也不会有影子。
kedudukan tangan = position of the hand The question asks where to put your hand so a shadow appears on the wall. Picture light leaving the lamp and travelling to the wall; where along that path can your hand block it? Example: When a classmate steps into a projector beam, his outline instantly appears on the screen. Watch out: If the hand is not in the light's path, it blocks nothing and no shadow forms.
Ringkasan
Syabas!
Kamu telah mencuba Rekreasi Sains bab Terang DAN Gelap.
Ingat: sediakan kawasan yang selamat; bentuk corak dengan tangan; perhati kesan jarak.
