SENSATIONAL SEASONS

THE EARTH’S TILT

• The Earth is tilted on a 23.5° angle.
• Scientists believe a Mars sized object collided with Earth, causing it to tilt.
• The Earth’s Tilt is what causes the seasons. Here’s why.....

SEASONS

• When the Southern Hemisphere is angled towards the Sun, it receives more direct sunlight and is hotter as a consequence. This creates the season of Summer.
• When the Southern Hemisphere is angled away from the Sun, it receives less direct sunlight and is colder as a consequence. This creates the season of Winter.

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WHAT IF THERE WAS NO TILT?

• There would be no seasons.
• The Earth’s temperature and seasonal conditions would remain constant for the entire year. These conditions would be similar to Spring or Autumn because no part of the Earth is moving closer or further away from the sun during the year.

CAIRNS VS CANBERRA

CAIRNS VS CANBERRA

GRAPH ANALYSIS

• RAINFALL - Canberra has more rainfall on average in Winter than Cairns because of the Winter dry season in Cairns. The tropical climate in Cairns causes a Summer monsoon season and a Winter dry season.
• However, Canberra has a relatively consistent yearly rainfall influenced by its inland position and elevation above sea level.

GRAPH ANALYSIS

• MAX TEMP/HOURS OF DAYLIGHT - Cairns has a higher temperature and more hours of sunlight than Canberra because it is closer to the equator and receives more direct sunlight, making it hotter and the days longer as a consequence.
• This is influenced by the tilt of the Earth

INFLUENCE ON HUMAN ACTIVITY

HOW DO THE SEASONS EFFECT FARMING?

• In Winter, in Cairns, there is less rain than Summer, which means less water for crops and plants, therefore they have a higher chance of dehydration and dying.
• In Summer, in Cairns, there is more rain than Winter, which means the crops might receive too much rain and drown.
• In Winter in Canberra, it may be too cold for seedlings to grow as the frost could kill them.

OVERALL SUMMARY

• Overall, the Earths tilt causes the seasons.
• Without the tilt of the Earth, the world would be a very different place. There would be no seasons, and temperature and weather patterns would not be the same as what Earth has always experienced.

BIBLIOGRAPHY

• https://earthobservatory.nasa.gov/Features/Milankovitch/milankovitch_2.php
• https://www.meritnation.com/ask-answer/question/what-is-the-meaning-of-seas...
• https://www.timeanddate.com/astronomy/axial-tilt-obliquity.html
• http://www.weatherquestions.com/What_causes_the_seasons.htm
• http://www.bom.gov.au/climate/averages/tables/cw_031011.shtml
• https://www.livescience.com/18972-earth-seasons-tilt.html
• http://theweatherprediction.com/habyhints2/471/