Lesson 4 - Heat Transfer Flashcards
In which direction does heat energy always flow
Up and hot to cold
When does heat energy stop flowing
When the temperature is equal
How does the suns energy reach the earth
In waves through radiation
What happens to the suns energy when it reaches the earth
It is absorbed by the earth
When an object is heated what happens to the particles
They gain energy
What happens when a cold object is placed against your warm skin
It gets cold
It is heat that is transferred never the
Cold
Convection currents stop flowing when all of the substance is at the same
Temperature
How does a person wearing a vest ensure that heat doesn’t escape
Gaps in the vest strap air. Air is a good insulator, this stops heat loss due to conduction
How does a squirrel in winter ensure body heat doesn’t escape
The tail traps air. Air is a good insulator, and so stops heat loss due to conduction
