EVERYDAY SCIENCE

Detailed explanation-1: -The seasons in the Northern Hemisphere are the opposite of those in the Southern Hemisphere. This means that in Argentina and Australia, winter begins in June. The winter solstice in the Southern Hemisphere is June 20 or 21, while the summer solstice, the longest day of the year, is December 21 or 22.

Detailed explanation-2: -The seasons experienced by the northern and southern hemisphere always differ by six months – when it is summer in the northern hemisphere, it is winter in the southern hemisphere, and so on.

Detailed explanation-3: -Since the sun is pointed directly at the northern hemisphere, it receives maximum sunlight. As a result of this, that half of the hemisphere experiences summer over in while the southern hemisphere experiences winter because it receives lesser sunlight.

Detailed explanation-4: -Seasons are caused by the fact that the Earth is tilted on its axis by 23.5°. The tilt’s orientation with respect to space does not change during the year; thus, the Northern Hemisphere is tilted toward the sun in June and away from the sun in December, as illustrated in the graphic below.

Detailed explanation-5: -The earth’s spin axis is tilted with respect to its orbital plane. This is what causes the seasons. 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.