Question

which of these is an example of passive (no moving parts required) solar energy used to heat homes? power plants large south facing windows wind turbines hydro dams

Explanation:

Passive solar energy systems do not require mechanical or electrical devices (no moving parts). Large south - facing windows allow sunlight to enter a home and heat the interior through the greenhouse effect. Power plants (solar power plants may have active components like pumps for heat transfer in some cases), wind turbines (have moving blades), and hydro - dams (have moving turbines) are not passive in the context of solar energy for heating homes.

Answer:

large south facing windows