Unit 9. materials
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![Page 1: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/1.jpg)
Unit 9
Materials
![Page 2: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/2.jpg)
Materials and their properties
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This is made of rubber.
![Page 4: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/4.jpg)
This is made of plastic.
![Page 5: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/5.jpg)
This is made of wood.
![Page 6: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/6.jpg)
This is made of paper.
![Page 7: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/7.jpg)
This is made of fabric.
![Page 8: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/8.jpg)
This is made of glass.
![Page 9: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/9.jpg)
This is made of metal.
![Page 10: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/10.jpg)
This is stone.
![Page 11: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/11.jpg)
This is a brick.
![Page 12: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/12.jpg)
This is made of leather.
![Page 13: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/13.jpg)
Click on the metal
![Page 14: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/14.jpg)
Click on the paper
![Page 15: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/15.jpg)
Click on the glass
![Page 16: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/16.jpg)
Click on the plastic
![Page 17: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/17.jpg)
Click on the wood
![Page 18: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/18.jpg)
Click on the fabric
![Page 19: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/19.jpg)
Click on the brick
![Page 20: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/20.jpg)
Click on the rubber
![Page 21: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/21.jpg)
Click on the stone
![Page 22: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/22.jpg)
Click on the leather
![Page 23: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/23.jpg)
The bottle is made of…
plastic
rubber
wood
![Page 24: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/24.jpg)
The window is made of…
glass
rubber
wood
![Page 25: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/25.jpg)
The wardrobe is made of…
wood
metal
plastic
![Page 26: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/26.jpg)
The book is made of…
paper
metal
plastic
![Page 27: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/27.jpg)
The scarf is made of…
fabric
metal
plastic
![Page 28: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/28.jpg)
The spoon is made of…
fabric
metal
plastic
![Page 29: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/29.jpg)
The wall is made of…
fabric
brick
plastic
![Page 30: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/30.jpg)
The bag is made of…
fabric
leather
plastic
![Page 31: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/31.jpg)
The duck is made of…
fabric
rubber
plastic
![Page 32: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/32.jpg)
The wall is made of…
fabric
stone
plastic
![Page 33: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/33.jpg)
Glass can be transparent.
![Page 34: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/34.jpg)
Glass can be opaque.
![Page 35: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/35.jpg)
Wool is soft
![Page 36: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/36.jpg)
Rubber is bendy
![Page 37: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/37.jpg)
Wood is rigid and hard
![Page 38: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/38.jpg)
A brick is rigid and hard
![Page 39: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/39.jpg)
Wood is rigid and hard
![Page 40: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/40.jpg)
Rubber is…
bendy
rigid
hard
![Page 41: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/41.jpg)
Wood is…
rigid
soft
bendy
![Page 42: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/42.jpg)
Glass is…
transparent
soft
bendy
![Page 43: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/43.jpg)
Brick is…
hard
soft
transparent
![Page 44: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/44.jpg)
Wool is…
soft
hard
rigid
![Page 45: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/45.jpg)
Magnetism
![Page 46: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/46.jpg)
Some objects are atracted to magnets.
![Page 48: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/48.jpg)
Is the spoon magnetic?
Yes, it is.
![Page 49: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/49.jpg)
Is the pencil magnetic?
No, it isn’t
![Page 50: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/50.jpg)
Is the sponge magnetic?
No, it isn’t
![Page 51: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/51.jpg)
Is the clip magnetic?
Yes, it is
![Page 52: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/52.jpg)
Is the bottle magnetic?
No, it isn’t
![Page 53: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/53.jpg)
Is the screw magnetic?
Yes, it is
![Page 54: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/54.jpg)
Properties of materials
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The shape of materials can change
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Bend
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Twist
![Page 58: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/58.jpg)
Stretch
![Page 59: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/59.jpg)
Squash
![Page 60: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/60.jpg)
Click on stretch
![Page 61: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/61.jpg)
Click on bend
![Page 62: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/62.jpg)
Click on squash
![Page 63: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/63.jpg)
Click on twist
![Page 64: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/64.jpg)
Is it bend or squash?
It’s squash.
![Page 65: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/65.jpg)
Is it twist or bend?
It’s bend.
![Page 66: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/66.jpg)
Is it stretch or bend?
It’s stretch.
![Page 67: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/67.jpg)
Is it stretch or twist?
It’s twist.
![Page 68: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/68.jpg)
Is it squash or twist?
It’s squash.
![Page 69: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/69.jpg)
Natural and manufactured materials
![Page 70: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/70.jpg)
Stone is naturalStone is made by nature
![Page 71: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/71.jpg)
Wood is natural
Wood is made by nature
![Page 72: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/72.jpg)
Leather is natural
Leather is made by nature
![Page 73: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/73.jpg)
Wool is natural
Wool is made by nature
![Page 74: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/74.jpg)
Plastic is manufactured
Plastic is made by people
![Page 75: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/75.jpg)
Glass is manufactured
Glass is made by people
![Page 76: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/76.jpg)
Cotton is manufactured
Cotton is made by people
![Page 77: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/77.jpg)
Paper is manufactured
Paper is made by people
![Page 78: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/78.jpg)
Is paper natural or manufactured?
Paper is manufactured.
![Page 79: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/79.jpg)
Is wood natural or manufactured?
Wood is natural.
![Page 80: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/80.jpg)
Is stone natural or manufactured?
Stone is natural.
![Page 81: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/81.jpg)
Is plastic natural or manufactured?
Plastic is manufactured.
![Page 82: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/82.jpg)
Is glass natural or manufactured?
Glass is manufactured.
![Page 83: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/83.jpg)
Is cotton natural or manufactured?
Cotton is manufactured.
![Page 84: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/84.jpg)
Changes of state
![Page 85: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/85.jpg)
Chocolate becomes soft when heated
LiquidSolid
![Page 86: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/86.jpg)
Ice becomes soft when heated
LiquidSolid
![Page 87: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/87.jpg)
Butter becomes soft when heated
LiquidSolid
![Page 88: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/88.jpg)
Water becomes hard when cooled
Liquid Solid
![Page 89: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/89.jpg)
Juice becomes hard when cooled
Liquid Solid
![Page 90: Unit 9. materials](https://reader035.fdocuments.in/reader035/viewer/2022062400/587d6dc31a28ab32318b72bd/html5/thumbnails/90.jpg)
Milk becomes hard when cooled
Liquid Solid