Why does insolation decrease with latitude?
The solar zenith angle (z) is related to the latitude of the hillslope and solar declination, which is a measure of how high the Sun may be in the sky at a given time of day and season. As the Sun becomes higher in the sky, the sunlight hits the slope more directly, and the total amount of energy received is increased.
What is the difference between insolation and temperature?
The insolation is the incoming solar radiation and the temperature is the degree to the hot and coldness of the item.
Why is insolation more over continents than over ocean?
Generally, at the same latitude the insolation is more over the continent than over the oceans because more clouds over the oceans reflect sun rays back into space. Isohels are lines connecting points on the earth surface that receive equal amounts of sunshine.
Why do isotherms generally trend east west?
Isotherms are drawn on maps to represent the distribution of temperature and they are useful for identification to make aspects of temperature distribution. The east–west trend of isotherms reflects the strong influence of latitude on the temperature and thus how the radiant energy budgets are affected.
Why does only 51 of insolation reach the earth surface?
Only 51% of the insolation reaches the surface of the Earth as out of the remaining 49%, 35% of the insolation is directly reflected back to space by the atmosphere and the rest of the 14% is absorbed by the ozone layer.
How is heat balance achieved Class 9?
Answer. Explanation: The earth-atmosphere energy balance is achieved as the energy received from the Sun balances the energy lost by the Earth back into space. Longwave radiation from the earth’s surface into space.
Why do oblique solar rays produce less heat?
Vertical rays heat up a smaller surface. Hence, the heat received per unit of area is large. On the other hand, slanting rays heat up a large area. Vertical rays travel through a shorter distance in the atmosphere and the loss of heat is less.
Why vertical solar rays produce more heat?
Because they fall on the sun directly . Because they fall on the sun directly. The vertical rays of sun gives more heat because it falls on lesser area with more intensity.
Why does the amount of insolation decreases from the equator towards the poles?
(ii) Insolation comes through vertical rays on equator. Thus, it covers up less space but we feel more heat there when it goes up from equator towards poles, the sun rays become slanting. This is the reason why amount of insolation decreases from equator towards poles.
Which of the following is a nature of atmosphere?
Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
What is atmosphere which two gases make the bulk of the atmosphere which gas creates greenhouse effect in the atmosphere?
Two gases which make the bulk of atmosphere are nitrogen and oxygen. Carbon dioxide creates Green House effect in atmosphere.
Which sun rays occupy less area?
The sun rays which occupy a lesser area are perpendicular rays or slant rays​
On which circle do the sun’s rays fall directly on June 21 and December 22?
Tropic of Cancer
Why do sun rays spread out?
As rays of sunshine emerge from behind those clouds, they appear to spread out, rather than converge, due to the configuration that the clouds on the horizon may be farther from you than the rays of sunshine streaming towards you.
What would the lowest sun angle be at the equator?
At the equator, 0 degrees latitude, the sun angle at noon at the equinox is 90 — 0 = 90 degrees, or directly overhead. Washington is at about 39 degrees north latitude, so at the autumnal equinox, which falls on Monday, the noon sun angle was 51 degrees.