There are several theories to explain how an ice age might begin. Consider the f
ID: 3895772 • Letter: T
Question
There are several theories to explain how an ice age might begin. Consider the following one:if the temperature of the world increases, evaporation of the oceans increases, precipitation increases, and snowfall increases. This results in more snow left in cooler places at the end of each summer, with successively increasing depths each winter that become hard-packed from the bottom up to become ice. All the while, the ice reflects more solar radiation that would otherwise be absorbed. This, in turn, cools the earth further and allows for more freezing. Can you continue this sequence and explain how the process reverses itself and how the ice age withdraws? Has Earth spent more time in an ice age or more time spend in an inter-glacial period (=not an ice age, like the present time).
There are several theories to explain how an ice age might begin. Consider the following one:
if the temperature of the world increases, evaporation of the oceans increases, precipitation increases, and snowfall increases. This results in more snow left in cooler places at the end of each summer, with successively increasing depths each winter that become hard-packed from the bottom up to become ice. All the while, the ice reflects more solar radiation that would otherwise be absorbed. This, in turn, cools the earth further and allows for more freezing. Can you continue this sequence and explain how the process reverses itself and how the ice age withdraws? Has Earth spent more time in an ice age or more time spend in an inter-glacial period (=not an ice age, like the present time).
Explanation / Answer
after earth freezes,the overall temperature decreases..so the evaporation decreases,source of snow fall decreases and hence the depth of winter decreases.