A. Because the heat of the rising sun _stops the radiation of heat_ from the earth, and _warms its surface_. Q. _How does this WARMTH produce a BREEZE?_ A. The air (resting on the earth's surface) is _warmed by contact_, ascends upwards, and _colder air rushes in_ to fill up the void, which is the cause of the _morning_ breeze. Q. _Why is there often an EVENING BREEZE during the summer months?_ A. The earth _radiates heat at sun-set_, and the air is cooled down quickly by contact: this condensation causes a _motion in the air_, which is the evening breeze. Q. _Why are TROPICAL ISLANDS always subject to a SEA-breeze every MORNING (i. e. a breeze blowing from the sea to the land)?_ A. The solar rays are unable to heat the surface of the _sea_ as they do the _earth_; therefore, the _air resting on the earth_ is more _heated_ than the _air resting on the sea_; and the colder sea air blows _inland_ to restore the equilibrium. Q. _Why is the LAND BREEZE UNHEALTHY?_ A. Because it is frequently loaded with exhalations from _putrefying animal_ and _vegetable_ substances. Q. _Why is the SEA BREEZE fresh and HEALTHY?_ A. Because it passes over the fresh sea, and is _not_ laden with noxious exhalations. It is _healthy_, therefore, to walk on the sea-beach before ten o'clock in the morning; but _unhealthy_ after sun-set. Q. _Why is there generally a fresh breeze from the SEA (in English watering places) during the summer and autumn MORNINGS?_ A. As the _land_ is _more heated by the sun_ than the _sea_; therefore, air resting on the _land_ is hotter than air resting on the _sea_; in consequence of which, cooler sea air glides _inland_, to restore the equilibrium. Q. _Why does the SEA BREEZE feel COOL?_ A. As the sun cannot make the surface of the _sea_ so hot as the surface of the _land_; therefore, the air which blows from the sea, feels _cooler than the air of the land_. Q. _Why are TROPICAL ISLANDS subject to a LAND BREEZE every EVENING (i. e. a breeze blowing from the land towards the sea)?_ A. The _surface of land_ cools down _faster_ (after sun-set) than the surface of the _sea_: in consequence of which, the air of the cold land _is condensed, sinks down_, and spreads itself into the warmer _sea air_, causing the LAND BREEZE. Q. _Why is the LAND BREEZE COOL?_ A. As the surface of the land is cooled at sun-set _quicker than the surface of the sea_; therefore, the seaman feels the air from the land to be chill. Q. _Why is the TEMPERATURE of ISLANDS more EQUABLE than that of CONTINENTS?_ A. Because the _water_ around the island _absorbs_ the extreme heat of summer, and _gives out_ heat to mitigate the extreme cold of winter. Q. _Why does the sea round an island GIVE OUT heat in winter?_ A. Unless the _sea be frozen_ (which is rarely the case), it is _warmer_ than the frozen land; and, therefore, the warmth of the sea air (mixing with the cold land air) helps to mitigate the intense cold.