The Ultimate Thermos Quiz
by Staff
You're going on a picnic and you want to take along a hot drink, so you put it in a thermos so it will stay hot. Or maybe it's a hot day and you put a cold drink or water in a thermos to keep it cold. Have you ever wondered how a thermos can keep things both hot or cold? Take this quiz to see how much you know about your thermos.

What does the concept of thermodynamics refer to?

  • shivering to keep warm
  • heat transfer
  • insulation on an airplane

What is heat anyway?

  • movement of atoms
  • radiation from the sun
  • lighting a fire

What factor effects the amount of heat created?

  • sound
  • speed
  • size

At what temperature is there no atomic movement?

  • absolute zero
  • zero
  • at freezing point

How is heat transferred?

  • colliding particles
  • colliding molecules
  • colliding atoms

What does the process of conduction refer to?

  • transfer of heat
  • transfer of cold
  • transfer of electricity

Which of the following materials is a good conductor?

  • plastic
  • wood
  • metal

Infrared radiation is a form of _____?

  • vibration
  • light
  • absorption

What color best absorbs infrared radiation?

  • black
  • white
  • blue

How much of the sun's energy that reaches the Earth is infrared radiation?

  • a quarter
  • a half
  • all

Which of the following are affected by the process of convection?

  • liquids
  • gases
  • both of the above

A good thermos will _____the transfer of heat by conduction, radiation and convection.

  • reduce
  • balance
  • increase

Which method does a thermos use to reduce heat?

  • insulation
  • encapsulation
  • obstruction

A good way to make your own thermos would be to surround a jar with which of the following?

  • metal
  • stone
  • foam

Why is a vacuum a better way of insulating?

  • Foam is hard to come by.
  • Heat is sucked away.
  • There are no atoms in a vacuum.

Inside a thermos there is a glass envelope which is surrounded by a vacuum. The glass is silvered, making it like a _____?

  • shaft
  • mirror
  • telescope

Why do things in a thermos lose their heat?

  • because the vacuum is not perfect
  • because the cap allows heat to escape
  • both of the above

How does a thermos know if you have hot or cold food inside?

  • It has a sensor inside.
  • You can only use it once for hot food.
  • It doesn't know.

It is not recommended to encase the glass center of a thermos in _____.

  • metal
  • plastic
  • bubble wrap

In outer space, where there is a vacuum, how does a space shuttle get rid of its heat?

  • It uses radiators.
  • It uses air conditioners.
  • There is no heat, because it's in a vacuum.