Which of the following is not an example of an energy transformation?
turning on a light switch
solar panels at work
formation of static electricity
none of the above

Turning on a light switch

Explanation:

According to the first law  of thermodynamics, the energy can neither be created nor be destroyed. Hence, it can only be transferred from one to another.

Thus, in the option solar panels at work, the solar energy is transformed into the electrical energy and in the option formation of static electricity the process of transformation of the mechanical or chemical energy into electrical  energy is taking place.

While turning on switch is just an task that does not involve transformation of energy. It just completes the circuit to allow the flow of current.

Hence, the answer is option "Turning on a light switch"  

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.