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Because the Earth's axis tilts 23.5 degrees and during the time we call "summer" this tilt in the northern hemisphere is towards the Sun. The Earth is in fact further away from the Sun during the northern hemisphere's summer (aphelion is around July 5 this year) but the more perpendicular rays from our star heat the atmosphere and land better then. (Closest approach - perihelion - is during the first week of January).
because it does
The northern hemisphere leans away from the sun the most on "Winter solstice", around December 21. This is the official start of Winter in the northern hemisphere, although the earth is slightly closer to the sun than it is in the Summer.
As everyone knows the Earth tilts on it's axis at the angle of 66 and half degrees. On 21st December the Earth tilts on it's axis so that the sun would hit the southern hemisphere and then the southern hemisphere would have winter while the northern hemisphere would have winter. So when the sun's rays hit the northern hemisphere then the northern hemisphere would have summer while the southern hemisphere would have winter.
There's no "why". Both hemispheres get the same.
"The solar rays are hotter on the equator than in the northern hemisphere."
Because the northern hemisphere has cooler places and it involves positions with the atmosphere.
Due to the nature of the terrain and the climate, South Africa will have a hotter Christmas than New Zealand. However, both countries celebrate Christmas during the summer month of December, so both countries have a hotter Christmas than countries in the northern hemisphere.
The US is completely in the northern hemisphere. Every place in the northern hemisphere is closer to the north pole than it is to the south pole.
Overall, southern regions tend to be hotter than northern regions due to their closer proximity to the equator. However, there can be variations based on specific locations and environmental factors.
The Northern Hemisphere and the Southern Hemisphere meet each other along the Equator, so they are the same distance.
There are more countries in the Northern hemisphere than there are in the Southern. There are approximately 30 nations in the southern hemisphere, the number varies depending on what you decide to do with nations the equator passes through. There are more than 30 nations in Europe alone, so adding the other countries in the Northern hemisphere would lead to a number much larger than 30.
UK is in the northern hemisphere while south Africa is in the southern hemisphere. during december the suns rays fall directly on the southern hemisphere while northern hemisphere gets slant rays hence UK is colder in december than Africa.
This is only true for the northern hemisphere. The reason is that the further south you go, the more directly overhead the sun is on average. The means that there is more heat from the sun per square mile.
what is the population of Northern Hemisphere
No, the northern hemisphere summer is hotter when you look at the planetary average. The reason is that there is more land in the northern hemisphere and when the sunlight hits the land it bounces off and heats up the air much more than when sunlight hits water. So whichever side with more land will have a hotter average summer, in the earth's case, by about 4 degrees Fahrenheit. On the other hand, the amount of water in your local environment has a much greater influence on the heat of your summer than which hemisphere you're in. For more detail, check out NASA's explanation below.
Yes, approximately 90% of the world's population resides in the northern hemisphere. This is due to the distribution of landmasses and more habitable regions in the northern hemisphere.