Most of the sources of energy we use represent stored solar energy. Which of the
following is not ultimately derived from the Sun’s energy?
(a) geothermal energy (b) wind energy
(c) nuclear energy (d) bio-mass.
(c) nuclear energy
Geothermal energy is derived from the heat of the earth’s surface. The surface of the earth is heated up by the sun.
Wind energy is derived from winds which are caused by the uneven heating of the land and seas. This heat is provided by the sun.
Nuclear energy is obtained from radioactive substances. Sun has no role in producing radioactive substances.
The substances like wood, plant etc ,which produce biomass energy, grow with the help of sun.