1. Why is the inside of a vacuum flask shiny?
- to keep the drink hot
- to reflect all heat emitted by the hot drink inside
- to absorb heat
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Other questions in this quiz
2. Why are liquids and gases poor thermal conductors?
- they have more energy so are therefore less dense and more spread out so it takes a long time to heat
- they are too thin
3. Why is the handle of a kettle plastic?
- cause it stops you burning yourself
- because plastic is a poor conductor so it wont heat up and burn you
- cause its chaep
4. What is infrared radiation?
- Infrared radiation is a type of electromagnetic wave
- a type of conduction
5. What are the differences between a solid and a liquid?
- particles in a solid less energy and are very dense where as liquids take shape of a form they are in.
- a liquid is a melted solid
- one is more thin then another