Science Project “Seasonal Changes” Science Projects on Air, Water, Weather and Temperature for Class 8, 9, 10 and 12 Students.
Seasonal Changes
The earth’s distance towards the sun does not signify how hot or cold the temperature is. Seasonal changes are caused because of the earth’s revolution round the sun and also due to the earth’s tilt of 23 degrees.
It is because of the changes in this tilt that causes the changes in the way in which the sunlight hits the earth’s surface. When it is summer in the northern hemisphere, it means that the hemisphere is tipped more towards the sun and vice versa.
The strongest effect of light rays occurs when they hit directly. Therefore, it is hotter in noon, when the sun is right overhead. However, at other parts of the day, because light turns weak when spread over a great surface at an angle. We can actually show how light spreads out over a greater surface area, when it hits an angular surface.