3.1: Natural ad made materials
True or false.
Glass is made from sand.
True
True or false.
Rock and rubber are rigid
False. rubber is flexible
Which word describes a silly material?
A: Material suitable for an object
B: Material not suitable for an object
B
How do you know if a ruler is flexible?
A: Test it by throwing it
B: Test it by bending it
C: Test it by sitting on it
B. Test it by bending it
What is the name of this process?
Ice -> Water?
Melting
Which of the following sentences are correct.
A: Paper is a natural material
B: Rock is a natural material
C: Oil is a made material
B: Rock is a natural material
Which of the following properties is correct about plastic?
A: Waterproof
B: Rough
C: Absorbent
Why is using rubber a silly material for a badminton racquet?
A: It is very nice and comfortable
B: It is light and easy to carry
C: It is too flexible. Bend easily
C
How can you tell if something is waterproof?
A: Water goes through
B: Water stays on top of the material
B: Water stays on top of the material
What can you do to make sure the water can become ice?
Freeze it
What is the name of this material?
Sheep: No! You use my "fur" to make beds, clothes, and other fabrics....why? Im sad.
Wool
Is paper strong or weak?
Weak
A window can be made of glass because glass is ____________.
Transparent
Oggy is touching a fabric and a sponge. What is he testing?
A: How smooth the objects are
B: How strong the objects are
C: How absorbent the objects are
A. How smooth the objects are
True or false.
Flour is a solid.
True
Where does oil come from?
Underground
Which of these objects are both strong and smooth?
A: Rock
B: Metal
C: Wood
D: Paper
B: Metal
Do you think it is a good idea to make a table using paper? Why?
No. Because paper is weak
What is a silly material for an umbrella?
Metal, paper, rock...any acceptable answers
Butter, sugar and eggs are used to make a cake. These three different materials are made into a __________.
Mixture