2The tilt of the Earth’s axis causes the seasons. The Earth’s axis is tilted from vertical.
3The axis always points in the same direction in space. Also, seasons change depending on the amount of sunlight reaching the Earth as it revolves around the Sun.The axis always points in the same direction in space.
4Light covers a smaller area and it is more intense (stronger). DirectIndirectLight covers a smaller area and it is more intense (stronger).Light is spread over a larger area (scattered) and it is less intense.
5During our summer the northern hemisphere is tilted toward the Sun. Summer solstice June 21-22Direct SunlightDirect SunlightDirect SunlightThe hemisphere that is tilted toward the sun receives more direct sunlight. The Sun rays are less scattered and temperatures are higher (warmer).
6The Sun is visible for 24 hours in the Arctic Circle in June. The hemisphere that is tilted toward the Sun has longer days and shorter nights.The Sun is visible for 24 hours in the Arctic Circle in June.Summer solstice June 21-22
7Winter Solstice December 21-22 During our winter the northern hemisphere is tilted away from the Sun.Indirect sunlightIndirect sunlightWinter Solstice December 21-22We are receiving sunlight at an indirect angle. The sun rays are scattered and the temperatures are lower (cooler).
8Shortest day of the year IndirectDirectSummer SolsticeJune 21First day of SummerLongest day of the yearWinter SolsticeDecember 21First day of WinterShortest day of the yearAxis tilted toward SunSummer for 3 monthsDirect sunlightLonger days; shorter nightsWarmer temperaturesAxis tilted away from SunWinter for 3 monthsIndirect sunlightShorter days; longer nightsCooler temperatures
9During fall and spring the Earth’s axis is parallel to the sun. SunlightVernal Equinox (Spring) –March 20 Autumnal Equinox (Fall) – September 22The northern and southern hemispheres get equal amount of sunlight. Temperatures are mild .
10Axis is parallel to the sun Vernal EquinoxMarch 20First day of SpringAutumnal EquinoxSeptember 22First day of FallAxis is parallel to the sunBoth hemispheres get equal amount of sunlightMild temperatures
11December 20 Winter Solstice Spins (rotates to the East) March 20Vernal EquinoxDecember 20 Winter SolsticeSpins (rotates to the East)Direct SunlightIndirect SunlightJune 20 Summer SolsticeSeptember 22Autumnal Equinox
12Involves one objectSpins around an axis (an imaginary line that goes down the center of an object)