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a. Class
- A material that soaks up water well is said to be absorbent.
- A material that resists water is said to be waterproof.
Terjemahan:
- Bahan yang dapat menyerap air dengan baik disebut bahan penyerap.
- Bahan yang tahan air dikatakan tahan air.
B. DETAILED FACTS
a. Materials
- Our world is made up of many different materials.
- Metals come from rocks.
- Wood comes from trees.
- Plastics and glass are made in factories.
- Ceramics are made of mud and clay.
- Most fabrics are made of parts of plants or animals.
- Tissues are made of a special absorbent paper.
Terjemahan:
- Dunia kita terdiri dari banyak bahan berbeda.
- Logam berasal dari batuan.
- Kayu berasal dari pohon.
- Plastik dan kaca dibuat di pabrik.
- Keramik terbuat dari lumpur dan tanah liat.
- Kebanyakan kain terbuat dari bagian tumbuhan atau hewan.
- Tisu terbuat dari kertas penyerap khusus.
b. Characteristics
- Some materials, such as metal, feel cold when you touch them because they draw the heat from your hand. They are said to be good thermal conductors.
- Other materials, such as wood, feel warm to the touch.
- They do not draw heat from your hand and are said to be good thermal insulators.
