Science is limited to investigation of topics for which evidence can be gained through experiments and/or observation.

(a) true
(b) false

Letter A - True

Explanation:

Science is in fact limited to topics in which evidence can be gained through experiments and/or observations.

This happens because to realize science, scientists have to strictly follow the scientific method. And in this method, essential steps are observation, formulation of hypothesis and experimentation.

It is also important to note that not all knowledge can be covered by the scientific method, this does not mean that it is not valid, just that it is not science.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy