
Classify conductors and insulators
Free printable Grade 6 science worksheet for "Classify conductors and insulators" — practice thermal energy. No-prep, print or assign online.
This middle-school Physical Science worksheet challenges students to classify conductors and insulators within the context of thermal energy, applying scientific reasoning to real-world materials. Teachers can use it to solidify understanding after hands-on experiments or demonstrations on heat transfer, or as an independent assessment activity. It supports deep conceptual thinking within the Thermal Energy substrand.
Learning objectives
- Classify materials as thermal conductors or insulators based on their properties
- Explain why certain materials allow or resist the transfer of thermal energy
- Apply the conductor-insulator distinction to everyday contexts and engineering applications
Answer Key

How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Classify conductors and insulators” worksheet free?
Yes. “Classify conductors and insulators” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Middle School (ages 11–14), covering Thermal energy.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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