Simplify the following text for a Grade 11 native English-speaking person.
Original: In passive solar building design , windows , walls , and floors are made to collect , store , and distribute solar energy in the form of heat in the winter ( Passive Solar Heating ) and reject solar heat in the summer ( Passive Solar Cooling ) .
Simplified: In passive solar building design , windows , walls , and floors are made to collect , store , and distribute solar energy in the form of heat in the winter and reject solar heat in the summer .