Menyisih sesuai untuk bahan besar yang mudah dibezakan dengan tangan. Mengayak memisahkan bahan halus daripada bahan yang lebih besar.
Langkah 1
Menyisih dan mengayak mengikut saiz
Menyisih sesuai untuk bahan besar yang mudah dibezakan dengan tangan. Mengayak memisahkan bahan halus daripada bahan yang lebih besar.
menyisih dan mengayak = 挑选与过筛 大块、容易分辨的东西,用手挑出来(menyisih)。大小不同的东西,用筛子筛(mengayak):细的掉下去,大的留在上面。 例子:妈妈用筛子筛面粉,结块的面粉留在筛上。 注意:用手挑适合数量少又大块的东西,太细太多就要用筛子。
menyisih dan mengayak = sorting and sieving Use your hands to pick out (menyisih) big items that are easy to tell apart. Use a sieve (mengayak) for materials of different sizes: fine bits fall through and bigger bits stay on top. Example: Mum sieves flour, and the lumps stay in the sieve. Watch out: Hand sorting suits a few large items; for many tiny grains, a sieve works better.
Langkah 2
Magnet dan pengapungan menggunakan sifat bahan
Magnet menarik bahan tertentu seperti besi. Pengapungan memisahkan bahan yang terapung daripada bahan yang tenggelam.
boleh ditarik: magnet | terapung: ambil dari permukaan
magnet dan pengapungan = 磁铁与浮起法 磁铁能吸起铁之类的东西。浮起法是把混合物放进水里,把浮在水面的东西捞起来,和沉下去的分开。 例子:铁钉掉进沙里,用磁铁一扫就吸出来;米里的谷壳泡水会浮上来。 注意:磁铁不是什么金属都能吸,铝罐和铜线就吸不起来。
magnet dan pengapungan = magnets and floating A magnet attracts certain materials such as iron. Floating separates things that float from things that sink: put the mixture in water and scoop from the surface. Example: A magnet pulls iron nails out of sand, and rice husks float up when rice is soaked. Watch out: Magnets do not attract every metal; aluminium cans and copper wire are not pulled.
Langkah 3
Penurasan memisahkan pepejal daripada cecair
Penapis membenarkan cecair melaluinya tetapi menahan pepejal yang tidak larut. Pilih penapis yang sesuai dan tuang perlahan-lahan.
penurasan = filtering A filter lets liquid pass through but holds back solids that do not dissolve. Choose a suitable filter and pour slowly. Example: When making tea, the strainer lets tea flow into the cup and keeps the leaves behind. Watch out: Sugar or salt already dissolved in water cannot be removed by filtering.
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Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
kacang dan muruku = peanuts and muruku The question asks how to separate peanuts from muruku. Observe both: how different are their size and shape, would a magnet attract them, and is there any liquid? Match these features to the methods. Example: Think about which method suits a box of mixed red beans and green beans of different colours. Watch out: Each method matches one feature, so first find the most obvious difference between the two foods.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Kaedah untuk pasir halus dan batu besar ialah...
pasir halus dan batu besar = 细沙和大石头 题目问怎样分开细沙和大石头。两样都是固体,线索是 halus(细)和 besar(大),说明大小差很多。想一想哪种方法是按大小来分的。 例子:工地上要把碎石和泥土分开,也是看颗粒大小。 注意:沙子又细又多,一粒粒处理太慢,方法要能一次处理全部。
pasir halus dan batu besar = fine sand and big stones The question asks how to separate fine sand from big stones. Both are solids, and the clue words halus (fine) and besar (big) show a large size difference. Think about which method separates by size. Example: Builders separating gravel from soil also look at the size of the pieces. Watch out: Sand grains are tiny and many, so the method must be quick and work on all of them at once.
Ringkasan
Syabas!
Kamu telah belajar tentang Kaedah Mengasingkan Campuran.
Ingat: menyisih dan mengayak mengikut saiz; magnet dan pengapungan menggunakan sifat bahan; penurasan memisahkan pepejal daripada cecair.