Transcript Sept 7 Name three negative effects of this forest fire.

Earth-Sun Relations and
Physical Processes
Pre-test
1. Which direction does the earth rotate? (East to West, or West
to East?)
2. How long does it take the earth to make a full rotation?
3. How long does it take the earth to make a full revolution?
4. Why are the days longer some times of the year than others?
5. Why is it winter in the southern hemisphere right now?
The Earth rotates, or
spins, from West to East
and this is why we see
the sun rise in the East
and set in the West.
Result of this
rotation is Night
and Day.
It makes one
complete
revolution
every
365.25 days.
Our 365 day
year is based
on the
revolution of
the Earth
around the
Sun.
Tilt
The Earth’s Axis is
not parallel to the
Sun’s Rays. If it
were, every day
would have as
many hours of
daylight as
darkness.
You may have
noticed that this is
not the case...
Seasons are
caused by the tilt
of the earth’s axis
as it revolves
around the sun.
Earths Axis
Seasons – As the
Earth Revolves around
the Sun, its Tilt causes
some areas to receive
more direct sunlight
than others.
When the Sun’s rays are
directed towards the Southern
Hemisphere, it is Summer in
the South Latitudes while the
Northern Hemisphere
experiences Winter.
Pre-test, Part 2
1. What is the water cycle?
2. What is the biosphere?
3. What is the difference between erosion and weathering?
4. Why do tectonic plates move?
5. What is the result of tectonic plate movement?
Bio Sphere
Erosion=involves movement
Weathering=one place
Chemical vs. Mechanical
 Caused
by separation, colliding, subduction or
transformation of plates
 Most occur along fault lines
 Earthquakes can cause tsunami’s or giant
waves that can travel across the ocean and
cause loss of life and property to many people