Why do hemispheres have different seasons




















It is winter in December in the Northern Hemisphere, because that is when it is the South Pole's turn to be tilted toward the Sun. During the summer, the Sun tracks more directly overhead, rising in the east, overhead at noon, and setting in the west. If you live in the Southern Hemisphere, the Sun will be more northerly in the sky during the winter that is, June, July, and August. So if you go to South Africa for the winter holidays, bring your swimsuit and leave your skis at home.

Weather Forecasting. The Short Answer:. What are the units used for the ideal gas law? How does Charle's law relate to breathing? What is the ideal gas law constant? How do you calculate the ideal gas law constant? How do you find density in the ideal gas law?

Does ideal gas law apply to liquids? Impact of this question views around the world. To understand how this works, imagine a small ball representing the Earth moving around a lightbulb the Sun in a circle. If you have these things at home, you can try this yourself. As the ball moves around the lightbulb, the half closest to the light will be lit, while the other half will be in darkness.

One full circle around the lightbulb represents one full year on Earth. As you move the ball around the lightbulb, try spinning it between your fingertips, so that the light always shines directly onto the equator.

If the Earth span like this, day and night would be the same length all year round, and there would be no seasons. Now, take that small ball and tilt it at an angle, so that the light from the bulb no longer shines directly on the equator. If you are doing this at home, it might help to colour in either the top or bottom half of the ball. Now the hemispheres of the ball will get different amounts of light at any one time.

The hemisphere tilted away from the bulb gets less light, and the hemisphere tilted towards the bulb gets more. Keeping the ball at the same angle, move it to the other side of the light bulb. The hemisphere that was tilted away from the bulb is now tilted towards it. The same thing happens as the Earth moves around the Sun, which is what gives us different seasons at specific times of the year. Remember, the decrease in sunlight and colder temperatures you get during winter is not because the hemisphere is further away, but because the sun is above the horizon for a much shorter time.



0コメント

  • 1000 / 1000