School โบ Day, night, seasons
Day, night and seasons
Why we have day and night, why summer is warm and winter is cold, and why it is not about how close we are to the Sun. Three ages, each with a text, an experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6โ7Why is it dark at night?The Earth spins like a top. Find out why that makes day and night, and why summer and winter are different.Ages 10โ11Day, night and the reasons for the seasonsHow Earth's spin gives us day and night, how its tilt gives us seasons, and why distance from the Sun is NOT the reason. With a fair-test torch experiment.Ages 15โ16Seasons: Sun angle, day length and energy per square metreThe geometry of the seasons: Earth's rotation and orbit, the noon Sun formula ฮฑ = 90ยฐ โ ฯ + ฮด, and how the Sun's elevation sets the energy on each square metre. With a shadow-stick measurement.