Direct
Light covers a smaller
area and it is more
intense (stronger).
Indirect
Light is spread over a
larger area
(scattered) and it is
less intense.
Summer solstice
June 21-22
Direct Sunlight
Direct Sunlight
Direct Sunlight
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
During our winter the northern
hemisphere is tilted away from the
Sun.
Indirect sunlight
Indirect sunlight
Winter Solstice
December 21-22
We are receiving sunlight at an indirect
angle. The sun rays are scattered and the
temperatures are lower (cooler).
Direct
Summer Solstice
June 21
First day of Summer
Longest day of the year
•Axis tilted toward Sun
•Summer for 3 months
•Direct sunlight
•Longer days; shorter
nights
•Warmer temperatures
Indirect
Winter Solstice
December 21
First day of Winter
Shortest day of the year
•Axis tilted away from Sun
•Winter for 3 months
•Indirect sunlight
•Shorter days; longer
nights
•Cooler temperatures
During fall and spring the Earth’s
axis is parallel to the sun.
Sunlight
Sunlight
Sunlight
Sunlight
Vernal Equinox (Spring) –March 20
Autumnal Equinox (Fall) – September 22
The northern and southern hemispheres
get equal amount of sunlight.
Temperatures are mild .
Vernal Equinox
March 20
First day of Spring
Autumnal Equinox
September 22
First day of Fall
•Axis is parallel to the sun
•Both hemispheres get equal amount
of sunlight
•Mild temperatures
March 20
Vernal Equinox
Spins
(rotates to
the East)
Direct Sunlight
December 20
Winter Solstice
Indirect Sunlight
June 20
Summer
Solstice
September 22
Autumnal Equinox
AXIS
AXIS
Sun Rays
REV
LUTI
N
•Involves two or more objects
•Object moves around a fix point,
usually another object
•Object follows an orbit or
pathway
THE END!!