What is the significance of each day with respect to daylight, season, and scientific name, and common?

March 20-22








June 20-22














September 20-22





December 20-22








and since i can ask only 3 more questions today do you know the answer 2 this: as the suns heats up the earth which material heats up the fastest?

What is the significance of each day with respect to daylight, season, and scientific name, and common?
These are the equinoxes and solstices.





Equinoxes mean "equal" days and nights - these are when the sun crosses the equator on its yearly journey in our skies.


March 20-22 - vernal (or spring) equinox, when the sun is directly over the equator on its journey north in our skies.


September 20-22 - autumnal (or fall) equinox when the sun is directly over the equator as it heads south





Solstices are when the days and nigths are at their extremes.


June 20-22 - summer solstice, when the sun is at its farthest north and the northern hemisphere has its longest day and shortest night.


December 20-22 - winter solstice, when the sun is at its farthest south and the northern hemisphere has its longest night and shortest day.





When the sun heats the Earth, the darkest material heats fastest.


Bare soil, plants, cooled lava flows are all dark.
Reply:1...21 March=Spring (spring equinox=Greek werd for equal)


Start av spring. Dae %26amp; nite same length. Astronomers defind equinox as point weer plane av erth's orbit intersekt plane av equater.


2...21 June=start av summer %26amp; longest dae.


3. 21 Sep=fall equinox=start av fall


4. 21 Des=shortest dae=start av winter.
Reply:For the second one... The black, flat, permeable, non-reflective objects heat the fastest. Black absorbs heat, flat objects have the most surface area exposed, permeable objects will spread and store the heat, and as a rule, most objects that can reflect light can reflect heat.