3.4 Changing Materials Transformation

PRACTICE: What material is this?

• Paper.

• Rubbish.

• Metal.

• Glass.

PRACTICE: Which of this materials is flexible?

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• 
• 
• 

What happens when you continue to twist a piece of paper?

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• 
• 
• 

The action changing the material is...

• Cutting

• Compress

• Stretching

• Bending

When you stretch a rubber band, what change do you observe?

• Become longer.

• Rubber band breaks.

• Become shorter.

• No change.

The action changing the material is...

• Twisting

• Compressing

• Stretching

• Bending

The plastic ruler bends easily because it is __________

• soft

• flexible

• rough

• shiny

Which of the following can be bent using our hands only?

• Wooden table

• Glass door

• Plastic bag

• Metal box

The action changing the material is...

• Twisting

• Compressing

• Stretching

• Bending

Why do you sort materials into different bins?

• Identify types of waste

• Mix all waste together in one bin

• Throw all waste in the same landfill

• Throw all waste in the same bin without sorting