1. The earth without its atmosphere would be inhospitably cold. 2. heating systems based on circulation of steam are more efficient in

Question

Explain why:

1. The earth without its atmosphere would be inhospitably cold.

2. heating systems based on circulation of steam are more efficient in warming a building than those based on the circulation of hot water.

Answer 1

1. The earth’s atmosphere acts like an insulating blanket around it and does not allow heat to escape out but reflects it back to the earth. If it were absent, the heat would have escaped and the planet would be very cold. 

2. Steam has a higher heat capacity (due to the latent heat) than boiling water. Therefore steam-based water heating systems are more effective.