The Effects Of Astronomical Cycles On Earth

1351 Words3 Pages

Will Porritt

90954
Demonstrate understanding of the effects of astronomical cycles on planet Earth

2016
INTRODUCTION
In this report I will be talking about astronomical cycles on the earth and how it relate to day and night, temperature change over twenty four hours, season and temperature changes over the winter and summer in New Zealand. All of these will relate to different astronomical cycles which create effects on the earth.
Day and Night
Day and night is caused by the tilt of the earth, which is caused by the 23.5 degrees in the earth 's axis and the spinning of the earth. The earth is spinning, which around is on its own axis through the earth and starts at the north pole and goes to south pole the axis is on an imaginary line through the earth which it spins on. The earth spins on its axis from to west to east , which it take 24 hours for the earth to spin around once, causing only one side of the earth to receive sunlight causing day and one side to receive darkness causing the …show more content…

A sidereal day is about one complete day that is a full rotation but 4 minutes shorter than on a solar day which is 24 hours.
This means that the north and south pole will only receive half of sunlight each, because of the way the earth tilt and where the sun light is facing. That 's why some country are really hot because they face right at the sun and they have longer days because the sun takes longer to go away . As a result of seasons, it change the length of day and night can vary by a few hours. When you see the sun shining in the sky it is day time and when you don 't see the sun shining in the sky it is night time. This is why we see the sun moving across the sky starting in the east in the morning and moving towards the west in the evening. Also the sun moves across the sky because the earth rotates on it’s axis. In this diagram it shows the day and night of the earth, against sunlight directly shining on to one side of the

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