The document discusses time zones, seasons, and the Earth's relationship to the sun. It explains that as the Earth rotates and revolves around the sun, different parts of the planet receive sunlight at different times, resulting in time zones. It also notes that the Earth is tilted on its axis and takes 365.25 days to orbit the sun, leading to seasons in the Northern and Southern Hemispheres. Key dates and phenomena like equinoxes and solstices are also outlined.

1. Day/Night
Time Zones
Seasons
EARTH

2. Explain what is happening in
this picture.

3. Why are there time zones?
 As earth moves, different parts of the earth
receive sunlight at different times.
 This is why there are different time zones
around the world.
 In the US, the east coast turns towards the sun
first.

4. U.S. Time Zones Map

5. Why do we have seasons?
 Earth is tilted on its axis
 Earth is revolving (orbiting) around the sun.
 It takes 365 and ¼ days to orbit the sun once
(year).
 Why do we have a Leap Year every 4 years?

6. Earth is
divided
into the
Northern
and
Southern
Hemispheres
by the
equator.

7. Equinox
 “equal night”
 Sunlight hits the earth most directly at the equator.
 Day & night lasts 12 hours at all latitudes.
 Spring & Fall
 March &
 September

8. Solstice
 A Solstice occurs twice a year, when the tilt of the
Earth's axis is tilted directly towards or away from
the Sun, causing the Sun to appear to reach its
northernmost and southernmost extremes.
 Winter solstice is the shortest day of the year. In the
Northern Hemisphere it occurs on December 21 and
marks the beginning of winter.
 The Summer Solstice is the longest day of the year.
It occurs on June 21 and marks the beginning of
summer.

9. A Year of Seasons

10. Can you explain what is
happening in this picture?