You are cooking pasta and putting a pot of water on an electric stove. When the water starts to boil, you add the pasta. What energy transformation occurs to cook the pasta?
a
electric energy to heat energy
b
mechanical energy to light energy
c
heat energy to mechanical energy
d
nuclear energy to heat energy
The correct answer is a) electric energy to heat energy. When you turn on the electric stove, it converts electrical energy into heat energy, which is then transferred to the pot of water, causing it to boil. The heat energy from the boiling water cooks the pasta.
The correct answer is: a) electric energy to heat energy.
When you place the pot of water on an electric stove and turn it on, the electric stove converts electrical energy into heat energy. This heat energy is then transferred to the pot of water, leading to an increase in temperature. As the water boils, the heat energy further increases the temperature of the water, which is necessary for cooking the pasta.
The correct answer is "a) electric energy to heat energy".
When you put a pot of water on an electric stove, the stove uses electrical energy to heat up the coils or burners. These coils or burners get very hot and transfer that heat to the pot, which in turn heats up the water inside. As the water temperature rises, it eventually reaches its boiling point.
Once the water starts boiling, you add the pasta. As the pasta is submerged into the hot water, the heat energy from the water is transferred to the pasta. This heat energy is then used to cook the pasta by softening and expanding the starches in the pasta, making it tender and edible.
Therefore, the energy transformation that occurs in this scenario is the conversion of electric energy from the stove to heat energy in the water in order to cook the pasta.