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The cause of seasonal variation is the tilt in the Earth's axis. As the earth orbits the sun different parts of the earth become directly aligned with the suns energy heading rfrom north to south and back again over the period of a year or 1 revolution.
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∙ 14y ago
Wiki User
∙ 12y agoThe amount of solar radiation absorbed by an object is relative to the angle at which it hits the object, and when the northern hemisphere is tilted toward the sun, the sunlight hitting it is more direct. The 21-degree tilt of the earth's rotational axis with respect to the plane of its solar orbit causes sunlight to hit the northern hemisphere for a longer period of time each day the closer you get to the summer solstice and the closer you get to the north pole. With the summer solstice only a month behind us, that's why it's currently the hottest time of the year in the northern hemisphere and the coldest time of the year in the southern hemisphere. At the time of the summer solstice, the north pole is as close as it ever gets to pointing at the sun; at that moment the sun is directly over the Tropic of Cancer.
Wiki User
∙ 12y agoWe have seaons due to the earths rotation around the sun. The closer we are the hotter it gets which is summer and the farther we get the colder which forms winter and fall and spring are the the middle of the line so to speak.
^ this is wrong. actually it is because of the earths tilt of its axis, which is 23.5 degrees. during the northern hemispheres winter, the axis is like this. (see illistration) actually, the closer we get to the sun, the colder it gets... hmmm...
/ /
(/) <- Northern Hemi. sum. (sun) southern hemi. sum. -> (/)
/ /
Wiki User
∙ 12y agoThe Earth's rotation causes seasons.
The earth's revolution around the sun.
Wiki User
∙ 13y agobecause of the earth orbits the sun and its orbital around the sun!
Wiki User
∙ 11y agoSeasons occur because of :
1) @The tilt of the Earth's axis
1) @The Earth's revolution around the sun
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What causes tidal changes?
the tides are not affected by seasonal changes
What is an adaptation in response to seasonal changes?
hibernation
How do plants detect seasonal changing?
Plants detect seasonal changes by temperature and day length.Plants detect seasonal changes by the amount of day light.
How does earths tilt on its axis lead to seasonal changes?
Earth's tilting on its axis leads to seasonal changes due variations in the angle (rather than distance) at which light hits.
Do Water temperature changes as much as atmospheric temperature?
No, the changes are far more gradual and are seasonal rather than day to day
How does a wild rabbit changes it's habitat?
There are seasonal changes which occur
What are the seasonal changes which occur in a hedgehog's habitat?
oldness and food.
Why do you have seasonal changes?
Seasonal changes occur because the earth is tilted so when it orbits the sun the earth is facing the sun in a different position.
How does the deer's react to seasonal changes?
Deer react very well to seasonal changes. :)
Does a lemur have seasonal changes?
no
What are the release dates for Seasonal Changes in Plants - 1964?
Seasonal Changes in Plants - 1964 was released on: USA: 1964
Seasonal changes occur because of .?
because the earth is tilted 23.5 degrees towards the north star, so we have two equinoxes in the spring and fall
Are there different seasonal changes?
yes
How do the snakes adapt seasonal changes?
Snakes adapt to seasonal changes by being able to fly . lol im not very helpful .
What biome has seasonal changes?
most of the biomes except for tundra and desert have all seasonal changes tundra and desert only have 2.
What are 6 seasonal fires that occur and ways to prevent them?
Forest fires are often "seasonal" in nature.
How does the seasonal change affect a dolphin?
seasonal changes can affect a dolphin by giving them diseases
