Fill in the blanks with suitable words.
(a) Falling water possesses ………………… energy.
(potential, kinetic, chemical)
(b) Heat is measured in unit called ……………….
(kilometres, kilogram, calorie)
(c) Plant stores the food in the form of ……………….. energy.
(mechanical, light, chemical)
(d) We should use ……………….. energy resources with care.
(conventional, non-conventional, both)
