Question

When a pot of water is put on a stove, the water at the top gets hot primarily by ____.

a. radiation
c. convection
b. conduction
d. condensation

Certain materials can become superconductors under what conditions?
a. When it is very hot
c. Under very high pressure
b. When it is very cold
d. Under very low pressure

Answer 1

The first one is C. convection

Answer 2

Answer
1. c. convection
2. b. When it is very cold

Step-by-step explanation
Water like any other liquid transfer heat energy through convection.

When a pot of water is put on a stove, the water at the top gets hot primarily by convection.

A supperconductor is a material that can conduct electric current with no resistance at all.
The supperconductivity can be achieved under cooled temperatures.

Certain materials can become superconductors under what conditions? When it is very cold