Science (Waste Materials)

Which of the following waste are organic wastes?

• Oil waste and smoke

• Mirror and chemical

• Metal and glasses

• Leftover food and Faeces

which of the following is biodegradable object?

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• 
• 
• 

Which of the following material will be the fastest to decay?

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• 
• 
• 

Which of the following is NOT the bad effect of improper waste management?

• Flash Flood

• Health problem

• Volcano eruption

• Air and water pollution

If you use a plastic bag for groceries and then make a kite out of it in the next day, the bag has been ___________.

• reduced

• reused

• recycled

• reversed

If you choose to take reusable bags to the grocery store instead of getting the plastic bags provided, you have ____________ the waste you generate.

• reduced

• reused

• recycled

• reversed

What can food waste be used for?

• Reuse and recycle

• Replacing toxic waste

• To be burn

• Composing and become fertilizer

What is the meaning of biodegradable waste?

• Waste materials that can be decayed by microorganisms.

• Waste materials that are not suitable for composing.

• Waste materials that cannot be decayed by microorganisms.

• Waste materials that are bad for environment.

At the Recycling Center, items are crushed, melted and formed into something new.

• True

• False

Pesticides, used batteries and smoke from vehicles are classified as__________.

• food waste

• toxic waste

• biodegradable waste

• excretory products