Unit 2 Review

Flashcard
•
Science
•
6th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is conduction?
Back
Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones, transferring energy.
2.
FLASHCARD QUESTION
Front
What is convection?
Back
Convection is the transfer of heat through the movement of fluids (liquids or gases). Warmer, less dense fluid rises while cooler, denser fluid sinks, creating a circulation pattern.
3.
FLASHCARD QUESTION
Front
What is radiation?
Back
Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation. It does not require a medium to travel through.
4.
FLASHCARD QUESTION
Front
How does a reflective layer in a travel mug minimize heat transfer?
Back
A reflective layer minimizes heat transfer by reflecting thermal radiation, keeping the contents hot or cold.
5.
FLASHCARD QUESTION
Front
Why are materials with air pockets effective insulators?
Back
Materials with air pockets are effective insulators because air reduces the transfer of heat due to fewer particle collisions.
6.
FLASHCARD QUESTION
Front
What is the best design feature for keeping a travel mug's contents hot?
Back
Double walls with a vacuum layer and a reflective outer surface are the best design features for keeping a travel mug's contents hot.
7.
FLASHCARD QUESTION
Front
What is thermal insulation?
Back
Thermal insulation is the process of reducing heat transfer between objects in thermal contact or in the range of radiative influence.
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