MATERIALS
Presentation
•
Science
•
4th - 6th Grade
•
Medium
Nisa A
Used 1+ times
FREE Resource
24 Slides • 1 Question
1
MATERIALS
by Teacher Khairunnisa
Sekolah Rendah Delima Satu, Kluster 3
2
• Wood is a material that comes from trees.
• Examples of objects made of wood: chairs, tables, doors.
WOOD
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• Metals are materials that come from under the ground.
• Examples of metals: iron, steel and aluminium.
• Examples of objects made of metal: iron nail, tin can, spoon.
METAL
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• Glass is a transparent material, made from sand (silica).
• Examples of objects made of glass: bottles, windows, vases.
GLASS
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• Plastics are man-made materials, made using oil from deep underground.
• Examples of objects using plastic: shopping bags, cups, toys.
PLASTIC
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• Rubber is made using the sap or latex from rubber trees.
• Examples of objects made of rubber: tyres, hoses, balloons.
RUBBER
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FABRIC
• Fabrics are thin and flexible materials.
• Examples of objects made of fabric: clothes, curtains
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CERAMIC
• Ceramic is a material made from clay.
• Examples of objects made of ceramic: pots, cups, vases.
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PROPERTIES OF MATERIALS
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a. Colour
This shirt is yellow.
This balloon is red.
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b. Texture
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c. Transparency
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d. Heat Conduction
- Metals are good conductors of heat.
- Wood, ceramic and plastic are poor conductors of heat.
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e. Magnetic
- Magnetic materials are materials that are attracted by a magnet.
- Non-magnetic materials do not attract a magnet.
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f. Strength
Strength is how much a material can be pulled apart or pressed together without breakin
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g. Hardness
Hardness is how much a material can be scratched or dented.
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h. Flexibility
Flexibility is how much a material can be bent without breaking.
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i. Floating or Sinking
• Float: stays on top of water
• Sink: falls to the bottom of water
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Solubility
• Soluble: substances that dissolve in water
• Insoluble: substances that do not dissolve in water
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SAFE AND SUITABLE MATERIALS
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A car windscreen is made from glass because it is transparent.
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A cooking pan is made from metal because it is suitable for heat conduction and the handle is made from wood because it is safe to hold.
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This shopping bag is made from paper.
Suitable because it is light and easy to carry.
25
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MATERIALS
by Teacher Khairunnisa
Sekolah Rendah Delima Satu, Kluster 3
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