Spring is a season. There are four seasons in a year, spring, summer, autumn and winter. Each season is marked by different weather and hours of daylight.
We have seasons because the earth takes a year to move round the sun, which gives us light and warmth, and because the earth tilts at an angle of 23.5 degrees. In winter we tilt away from the sun and in the summer we tilt further towards the sun. However, on the first day of spring the sun shines equally on both the north and south hemispheres of the Earth.
What Happens in Spring?
From 20 March onwards in the northern hemisphere, the hours of daylight get longer and longer until summer, when you will notice that it is still light at bedtime. So when summer begins on 21 June there are over 16 hours of daylight and under 8 hours of darkness.
The reason for the days getting longer is because our country of the United Kingdom, along with others in the northern hemisphere is tilting more and more towards the sun. As the sun's rays reach us more directly the days get warmer as well as longer.