Imagine celebrating Christmas on a long, hot summer day! In the Southern hemisphere the seasons are the other way around. When it is summer in Europe, it is winter in Australia.In London, the longest day is about 16 hours and 39 minutes and the shortest is 7 hours and 45 minutes. In summer the days are longer than they are in winter.In the Northern hemisphere, we have summer in June, July and August and winter is in December, January and February.The (imaginary) line between them is called the equator. We call the top half the Northern hemisphere and the bottom half the Southern hemisphere. At any moment, half of the world is in daytime and half is in nighttime.It takes 24 hours for the Earth to turn all the way around (rotation).Days are longer in the summer and shorter in the winter. Over a year, the length of the daytime in the part of the Earth where you live changes. It takes 24 hours for the world to turn all the way around, and we call this a day. We get day and night because the Earth spins (or rotates) on an imaginary line called its axis and different parts of the planet are facing towards the Sun or away from it. Nighttime is when the sun is on the other side of the Earth from you, and its light and heat don’t get to you. Give it a try - and, see below for spring-themed books to read with your child.Daytime is when you can see the sun from where you are, and its light and heat can reach you. The feat simply takes the right egg, a little practice, and a lot of patience. Standing an egg on its end is something just about anyone can do any day of the year. There is no gravitational change during the equinox that would help an egg balance. The bottom line: This egg-balancing trick is just an old wives' tale. “This is why standing on two feet is easier than standing on only one foot.” “We stand upright by keeping our own personal centers of gravity within the bounds of our feet on the ground,” says Keller. You would not have time to balance your egg!"Ī balancing act: Is it possible to balance an egg in an upright position? The key is finding an egg with a yolk centered in the shell. “Even were there such a solar influence, it would only work in one place at a time, and that place would be moving at a speed on the surface of the Earth of about 1,000 miles per hour at the equator. The idea that an egg could balance on this day comes from the thought that since the Sun and Moon are equidistant from the earth, the pull of gravity is equalized and therefore an egg is less likely to fall over. The equinox, explained: The spring equinox occurs when the Earth is tilted parallel to its path of motion around the Sun, which makes the length of the day and the night exactly the same. Here, three things to know about the equinox and eggs: Keller, PhD, CEO of Smart Science Education Inc., for his scientific opinion. We wondered … is it really true? So we reached out to Harry E. Each season, this idea seems to pop up on the news, in social media, and in schools. Legend has it that on the spring equinox, you can balance an egg in an upright position thanks to the Earth’s position relative to the sun.
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