Cold weather can put increased stress on our cardiovascular system. Cold temperatures cause your blood vessels to constrict, shallow breathing, and a slight thickening of the blood.
These changes can cause chest pain in people with heart disease. You might be more sensitive to feeling cold. Research done at the University of South Australia found that certain forms of insomnia occur with poor body temperature regulation.
Cold air does not kill germs Different viruses have different properties, but in general, viruses are very durable organisms that can survive freezing temperatures, according to Edward Bilsky, Ph.
If the room is too cold, you are likely to curl up under a mountain of blankets which may raise your core temperature to levels which can cause night sweats and may interrupt your sleep. Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home How do seasons occur explain with a diagram?
Ben Davis May 31, How do seasons occur explain with a diagram? How do seasons occur explain? How do seasons occur Class 5? What are the four seasons and their months? What are the types of seasons? What are the 4 types of climates?
Which is warmer spring or fall? What would happen if there was no winter? As we move around the Sun during the year, the amount of light each area of the planet receives varies in length. When the Earth's axis points towards the Sun, it is summer for that hemisphere. When the Earth's axis points away, winter can be expected. The north pole tilts towards the sun. It is Summer time in countries in the Northern Hemisphere.
It is Winter time in countries in the Southern Hemisphere. The north pole tilts away from the sun. It is Winter time in countries in the Northern Hemisphere. It is Summer time in countries in the Southern Hemisphere. The north pole begins to move away from the Sun. The Sun rises lower in the sky so the days start getting shorter.
When the Sun is at its mid-point in the sky, we reach the ' autumn equinox ', around 22 September. Day and night are both 12 hours long and its the beginning of autumn.
The Earth continues on its path, and our north pole starts moving towards the Sun again. The Sun moves upwards in our skies and the days continue getting longer.
Again, we reach a midpoint when day and night are both 12 hours long. This is called the ' vernal or spring equinox ' and happens around 21 March. The Earth's movement around the sun causes the seasons, but it does not affect the temperatures during the seasons. Many people believe that the temperature changes because the Earth is closer to the sun in summer and farther from the sun in winter.
The Northern Hemisphere receives fewer sun rays. This causes the short days and chilly weather of winter. The Southern Hemisphere enjoys summer during this time. A tree changing its appearance during the four seasons. But the temperatures are never very high, they are still very low and have cold climates. Earth takes exactly and a quarter days to orbit the Sun. Because of that quarter of a day, every forth year, an extra day is added to the month of February.
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