Question

fill in the blanks
a. a metal spoon kept in a hot cup of tea gets heated due to______.
b.______ is the process by which heat can transferred through vacuum.
c. cooking is faster in utensils made of___
d. the constriction in the tube near a bulb of a thermometer is called_____​

Answer 1

Answer:

1st one is because the collision betwwen the water particals move fast so the spoon will become hot

Answer 2

Answer:

Ans a) conduction

Ans b) Radiation

Ans c) metals

Ans d) kink

Explanation:

Conduction occurs in metals (tightly packed molecules)

Convection occurs in liquids and gases (loosely packed molecules)

In Radiation heat is transferred from hot body to cold body. Eg- when you sit in front of fire , you feel warmth of fire.