Question

A beaker containing water with a temperature of 20 °C is placed on a hot stove. After some time, students measure the temperature of the water and notice it is different at the top (Figure A) than at the bottom (Figure B).What is happening in the experiment involving water and the hot stove?AThe warmer water near the heat source rises and the cooler water takes the place of the warmer water in the beaker.BThe water in the beaker is a good conductor of heat like metal and is transferring heat.CHeat is transferred from the lower portion of the beaker to the top of the beaker through electrons.DThe warmer water molecules in the beaker make the cooler water molecules in the beaker hotter.

Answer 1

$\begin{gathered} What\text{ happens in the experiment is the warmer water molecules in the} \\ \text{beaker make the cooler water molecules in the beaker hotter} \\ \\ \text{Question 2} \\ The\text{ outcome of this experimente is The dark soil will heat up the fastes}t \\ as\text{ heat transfer from the lamp to surface of the soil via radiation, and then} \\ \text{the soil will absorb the heat through conduction} \\ \\ \text{Question 3} \\ \text{The potential energy is due to the height of an object from }a\text{ reference point,} \\ \text{hence, when the height increases, the potential energy increases too.} \\ \text{ Therefore, the correct option is B} \\ \end{gathered}$