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setting - Energy and Latitude

This is Antarctica. What season is this? i m sorry is night and also which is day?

The sunlight is constantly up, even in the middle of the night in Antarctica throughout the summer. The photograph on the left is Antarctica throughout the night in the summer. The picture on the appropriate is Antarctica during the work in summer. Similarly, in the winter Antarctica is greatly dark every day.

Different parts of Earth’s surface receive different amounts of sunlight. The sun’s beam strike Earth’s surface ar most straight at the equator. This concentrates the light ray on a small area. Since the light ray hit much more directly, the area is cook more. You deserve to see this in the number below. Notification that the earth is tilted top top its axis. The curvature the the Earth reasons the reduction in energy concentration. Additionally, the tilt the the planet in some instances (winter in northern hemisphere) causes a reduction, and in other instances (summer in the north hemisphere) in reality causes boost in power concentration.

The lowest latitudes gain the most power from the sun. The greatest latitudes get the least.

The tilt the the Earth reasons different locations to get different quantities of solar energy. The distinction in solar energy received at various latitudes cd driver atmospheric circulation. Locations that get much more solar power have an ext heat. Locations that get less solar energy have much less heat. The air over the locations receiving more heat warms up and also rises. The air end the locations receiving less heat is cooler and so that sinks. The rising warmth air and also sinking cool air develop wind which move air and heat around the planet.

Source:Open education and learning Group Textbooks - earth Science

In bespeak to help you understand this an ext clearly, refer to the photo. In this photo, a grid of same dimensions has actually been inserted on a projector screen, superimposed top top a globe. Due to the fact that of the curvature the the world which represents Earth, the grids space not uniform. An alert at the equator, the grids space proportionally smaller than they room at the poles. This to represent the solar radiation being scattered over a better distance in ~ the poles. An alert that in ~ the equator, the grids room not distorted, definition solar radiation is no scattered near as much. Due to the fact that of this, the air, ocean, and also Earth"s surface ar gets heated in ~ the equator an ext than at the poles.

If we were to to compare these two regions, us would discover that there is a network loss the solar radiation in the greater latitudes and also a net gain in the tropics. This distinction in solar radiation create a movement of wait (wind) indigenous the warmer tropical areas toward the cooler northern and also southern regions, the poles. See number 2.


This relocating air creates oceanic surface ar currents that moves the water in the same direction as the wind, that is, currents indigenous the equator and also tropics move warmth water northward toward greater latitudes, and currents native the poles relocate cooler water southward toward reduced latitudes. Currently think about this, do winds within the area wherein you live punch from the north toward the southern or southern toward the north? If you analyze wind trends where you live, you most likely will discern that the winds generally have a westerly or one easterly ingredient to the north-south directions, i.e. Northwest, southeast, southwest, west southwest, etc. What is the factor for this? Why don"t winds blow simply north and also south, moving the ocean currents north and south according to figure 2? good question. Research will help carry out the answer.


A lot of the solar energy that reaches planet hits the equator. Much much less solar energy gets to the poles. The distinction in the lot of solar power drives atmospheric circulation.

Practice use this resource to price the concerns that follow.

What is latitude? What go latitude way to the heating of the Earth? Why perform high latitudes receive less sunlight? What is the edge of incidence?

Answers - highlight the box listed below to view the answers.

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Latitude is the measurement of the distance of a ar on the planet from the equator. The additional away from the equator the a location resides, the much less sunlight the this ar receives. the all needs to do v the shape of the Earth. Due to the fact that the earth is round, only the front most portion receives direct sunlight.


The phibìc Pole receives sunlight 24 hours a work in the summer. Why does that receive much less solar radiation 보다 the equator? What part of earth receives the most solar radiation in a year? What makes the setting move the way it does?

Answers - highlight the box below to check out the answers.

the receives much less solar radiation than the equator because the angle of incidence is much smaller. The sun’s rays carry out not strike the Earth’s surface as straight at the north Pole; castle are less focused. The equator obtain the many solar radiation in a year. The distinction in the lot of solar energy the land receives reasons the environment to move the means it does.

Source:Open education Group Textbooks - planet Science