B.Fill in the blanks.
1. Air is _________conductor of heat.
2. Conduction mainly takes place in__________.
3. Heat is a form of energy that travels from a_________object toa ________object.
4. A spoon kept in a cup of hot tea gets heated by________.
Answers
Answer:
1)bad
2)solid,liquid and gas.
3)hotter , cooler
4)conduction
explanation:
1)Air is a bad conductor because, to conduct heat current molecules should absorb heat and transmit it to neighbor by vibrating. ... So , "If air were a good conductor of heat" then soup will not stay hot for longer because this time convection+conduction will both help to transfer heat away from soup.
2)
We tend to think that conduction only happens in solid materials but this is not true, conduction takes place in solids, liquids and gases, usually though the other forms of heat transfer mask it in all but solid matter. Heat transfer by conduction relies on direct contact between atoms or molecules.
3):Heat is a form of energy that travels from a hotter object to a cooler object.
4)This is an example of heat transfer by conduction as the heat from the tea goes into the spoon. Energy is transferred from the hot, fast moving particles of the tea to the spoon.