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Mini-Quiz: Thermos Container Uses Thermal Insulation

by Ron Kurtus

Take this Mini-Quiz to check your understanding of the lesson material.

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1. What makes a material a good thermal insulator?

It conducts heat by conduction, convection and radiation

It barely allows heat to move through it by conduction

It is made of silver

2. Why must the cap be made of insulating material?

Otherwise heat would escape through the cap

To prevent dirt from getting inside the thermos

No one really knows the reason for that

3. Why is the inside of a vacuum thermos silvered?

Silver is one of the best thermal insulators

To prevent the vacuum from escaping

To prevent heat transfer by radiation through the vacuum

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

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Physics topics

Mini-Quiz: Thermos Container Uses Thermal Insulation

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Thermal Energy topics

• Thermal Energy is Kinetic
• Thermal Potential Energy

Temperature

• Temperature Overview
• Temperature Measurement
• Temperature Scales
• Temperature Limits
• Temperature Equations

Heat transfer

• To Heat an Object
• Heat Transfer
• Heat Transfer with Coffee
• Heat Transfer on Earth
• Heating a Greenhouse
• Turning Ice into Steam
• Mpemba Effect

Thermal insulation

• Thermal Insulation
• Thermos Containers

Thermodynamics

• Thermodynamics

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