We’re celebrating recycling in this quiz! Can you salvage a passing score, or will you end up in the garbage?

#1. PET, HDPE and PVC are all types of what material?

PET, HDPE and PVC are all types of recyclable plastic. PET stands for polyethylene terephthalate, HDPE is high-density polyethylene and PVC is polyvinyl chloride.

#2. If you have a choice, which part of the motto ‘reduce, reuse, recycle’ is the best option for the environment?

Reducing the amount of waste you use is the best choice for the environment. If you can’t avoid it, you should try to reuse your waste. If that’s not an option, you should recycle what’s left.

#3. How much energy is saved when you recycle aluminium, rather than mining and refining new metal?

You can recycle about 20 kilograms of aluminium with the energy it takes to mine and refine 1 kilogram of new aluminium.

#4. True or false? Black asphalt roads can’t be recycled.

False! Asphalt is one of the most recycled materials in the world, and a lot of new roads in Australia use a mixture of new and recycled materials.

#5. Where do astronauts on the International Space Station get their water from?

It’s expensive to launch things into space, so astronauts recycle as much as they can, including drinking water!

Was I right?


Congratulations! You are a real science whiz!

Oh dear! Better brush up before the next quiz!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

By submitting this form, you give CSIRO permission to publish your comments on our websites. Please make sure the comments are your own. For more information please see our terms and conditions.

Why choose the Double Helix magazine for your students?

Perfect for ages 8 – 14

Developed by experienced editors

Engaging and motivating

*84% of readers are more interested in science

Engaging students voice