Unit 5 Materials Starting Up Types of materials

Unit 5 : Materials )วสด (

Starting Up Types of materials. (ชนดของวสด )

Match each material with its description. ____ 1. ceramic ____ 2. diamond ____ 3. fiberglass ____ 4. graphite ____ 5. aluminium ____ 6. titanium ____ 7. rubber ____ 8. silver ____ 9. nylon ____10. polystyrene

Checking your answers. __G__ 1. ceramic __F__ 2. diamond __H__ 3. fiberglass __D__ 4. graphite __E__ 5. aluminium __J__ 6. titanium __B__ 7. rubber __A__ 8. silver __C__ 9. nylon __I__10. polystyrene

Listen to the CD. Then note and underline the stressed syllable. Ex. nylon * bold color = stressed syllable )คำทเปน สแดง คอ คำทมการ เนนเสยงหนก ทพยางคนน ) 1. rubber 2. graphite 3. silver 4. ceramic 5. titanium

Checking the answers. 1. rubber 2. graphite 3. silver 4. ceramic 5. titanium

Check your answers. 1. c. fiberglass 2. b. polystyrene 3. d. titanium 4. a. rubber 5. a. graphite 6. c. diamond

Practice D : Aluminium = Aluminum Practice E: Brick made of clay = ดนเหนยว

Listening & Speaking : Alloy.

Practice B: Write short answers to these questions. 1. What is alloy? = …………………… 2. What is brass made from? = …………………… 3. What is bronze made of? = …………………… 4. Give an example of alloy? = …………………… 5. Who knew well about alloy? = ……………………

Check your answers. 1. What is alloy? = A metal that has two or more metals mixed together. 2. What is brass made from? = Copper and zinc. 3. What is bronze made of? = Copper and tin. 4. Give an example of alloy? = Brass and bronze. 5. Who knew well about alloy? = Adam.

Checking your answers of Practice C. 1. a. hard 2. c. brittle 3. d. corrosion-resistant 4. d. rigid 5. d. flexible 6. c. heat-resistant

Practice A : Complete the sentences with made of or made from. 1. Paper is ______ trees. 2. This wall is _____ bricks. 3. This shirt is _____ cotton. 4. The keyboard is _____ plastic. 5. Butter is _____ milk. 6. This table is ____ wood. 7. The fence is ____ wire. 8. This shirt is _____ silk. 9. That bumper is ____ plastic. 10. Bread is ____ flour.

Checking your answers. 1. Paper is made from trees. 2. This wall is made of bricks. 3. This shirt is made from cotton. 4. The keyboard is made of plastic. 5. Butter is made from milk. 6. This table is made of wood. 7. The fence is made of wire. 8. This shirt is made of silk. 9. That bumper is made of plastic. 10. Bread is made from flour.

Practice B: Translate these sentences into the Thai language. 1. Most coins are made of silver or a metal of similar appearance. = …………………………… 2. This table is made of stainless steel. = …………………………… 3. This piece of furniture is made of teak. = …………………………. . 4. Rubber is made from the juice of a tropical tree. = ……………………………

What are bridges made of?

Practice B: Underline the materials that have been used to build bridges. • rubber • wood • copper • stone • plastic • steel

Practice C: Write true or false about the above passage. ___ 1. Bridges cannot be made of stone. ___ 2. Stone bridges are much stronger than wooden bridges. ___ 3. Early bridges were made of steel. ___ 4. Wood is the major material used today for building bridges. ___ 5. Many stone bridges built almost 2, 000 years ago by the ancient Romans still stand today.

F T F F T Checking your answers. 1. Bridges cannot be made of stone. 2. Stone bridges are much stronger than wooden bridges. 3. Early bridges were made of steel. 4. Wood is the major material used today for building bridges. 5. Many stone bridges built almost 2, 000 years ago by the ancient Romans still stand today.