A thermogram taken outside a house shows high amounts of thermal energy around the windows but not around the roof.

Question

Which conclusion supports the thermogram?

The windows and the roof are energy efficient.
The windows and the roof are not energy efficient.
The windows are not energy efficient, but the roof is energy efficient.
The windows are energy efficient, but the roof is not energy efficient.

Answer 1

The conclusion that supports the thermogram is:

The windows are not energy efficient, but the roof is energy efficient.

This is because the high amounts of thermal energy around the windows indicate that they are losing heat, suggesting a lack of energy efficiency, while the absence of heat loss around the roof suggests it is energy efficient.