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how and why do seasons change

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by

Steffanie Bowling

on 19 September 2012

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Transcript of how and why do seasons change

It becomes cold in winter because Earth is slanted on its own axis, so the sunlight falls on Earth at different angles during different seasons. During winter there is the least sunlight because you are facing the moon. Why does it get cold in winter? Some animals move from different places as the weather gets colder. Other animals stay in their habitat and hibernate during winter. When they hibernate this is because there is a lack of food and can get way too cold for them. When the earths rotates around the sun, it is also moving around its own axis. This causes the Earth to lean away from the sun. This happens in such a short period of time such as around three months so the Northern Hemisphere may be Summer while the southern Hemisphere will be Winter. How do seasons change in only a short amount of time Some countries get much colder than others do because they are further away from the equator, which means they receive less heat. The equatorial regions never have much of a cold winter because they are always closer to the sun. Why do some countries get colder
than others Why does it get cold in winter? The actual reason some trees lose leaves during autumn is to save energy and stop them drying out when the winter comes. These trees are called deciduous trees. The cold and dry winds over the winter time would mean these trees would lose all their water - if they did have leaves.
Without any leaves in the winter these trees slow right down and stop growing. Some animals move from different places as the weather gets colder. Other animals stay in their habitat and hibernate during winter. When they hibernate this is because there is a lack of food and the weather can get way too cold for them.
How do the seasons affect all the animals? What I learned in science
extension this term The earth is always tilted at an angle to the sun. In our summer, the southern hemisphere is tilted towards the sun, in our winter, it is tilted away. In other words in summer we are just a bit closer to the sun and so it is warmer - and the days are longer. In winter we are just a bit further away from the sun so it's colder - and the days are shorter. Equator Northern Hemisphere Southern Hemisphere tree growing in Autumn Why do certain trees lose leaves through some of the seasons? http://www.youtube.com/watch?v=lkWyM-M8o0c A few things to remember from my prezi are:
The closer you are to the equator the warmer you are
Sunlight falls on different angles during different seasons
Trees lose leaves in autumn so they can save energy for winter
When animals hibernate it is because of the cold Thank-you for watching!
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