SfC Home > Physics > Thermal Energy >

Mini-Quiz: Thermos Container Uses Thermal Insulation

by Ron Kurtus (revised 8 November 2014)

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

---

---

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.

---

Always do your best

---

Resources and references

Ron Kurtus' Credentials

Websites

Physics Resources

Books

Top-rated books on Thermodynamics

---

Questions and comments

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

---

Share this page

Click on a button to bookmark or share this page through Twitter, Facebook, email, or other services:

---

Students and researchers

The Web address of this page is:
www.school-for-champions.com/science/
mini-quiz_thermos.htm

Please include it as a reference in your report, document, or thesis.

---

Where are you now?

School for Champions

Physics topics

Mini-Quiz: Thermos Container Uses Thermal Insulation

---

---

---

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

---

---

Let's make the world a better place

Be the best that you can be.

Use your knowledge and skills to help others succeed.

Don't be wasteful; protect our environment.

You CAN influence the world.

---

---

---

---

Live Your Life as a Champion:

Take care of your health

Seek knowledge and gain skills

Do excellent work

Be valuable to others

Have utmost character

Be a Champion!

---