What is used to cool a house during warm weather as part of a passive solar system? 

A)  earth tubes and tanks buried underground 
B)  coniferous trees to block the summer sun 
C)  large un-insulated windows 
D)  foil sheets under the floor

Passive Solar System

A design approach that utilizes the sun's energy for the heating and cooling of living spaces by exposure to the sun.

Earth Tubes

Underground pipes used to tap into the thermal stability of the earth for heating, cooling, and ventilating buildings, utilizing passive geothermal energy.

Warm Weather

Conditions characterized by higher temperatures, often leading to changes in ecosystems, human behavior, and the spread of diseases.