In this lesson, you will learn about Seasons and weather as a brief explanation

1. GEOGRAPHY
CHAPTER 3, LESSON1:
SEASONS AND WEATHER
By Ali Mohamed Ali Hassan in grade 9

3. SEASONS
In this section you will learn about different types of seasons according to the
position of the earth facing the sun and how does it happen and etc.

4. THE VOCABULARY OF THIS SECTION
• Equator: It is the imaginary line on the spheroid's surface, dividing it into
northern and southern hemispheres.
• Seasons: each of the four divisions of the year marked by particular weather
patterns and daylight hours, resulting from the earth's changing position with
regard to the sun.
• Tropic Cancer: It is the most northerly circle of latitude on Earth at which the
Sun can be directly overhead.
• Tropic Capricorn: Its Southern Hemisphere counterpart, marking the most
southerly position at which the Sun can be directly overhead.
• Solstice: either of two times of year when the sun`s rays shine directly overhead
at noon at the furthest point north or south.
• Equinox: each of the two days in a year in which day and night are equal

5. DIFFERENT TYPES
OF SEASONS OF
THE EARTH
The passing of a year can bring a
marked change in the weather and the
surrounding environment. The four
seasons — winter, spring, summer,
autumn — can vary significantly in
characteristics, and can prompt
changes in the world around them.

6. EARTH`S TILT
Rotation = 1 day Revolution = 1 year

7. EARTH`S TILT
rotation
• The earth is tilted at a 23.5 degree
angle in relation to the sun.
• The earth is divided into two halves
as day and night.
• The time from places to places in
earth is different because earth titled
bit curved.
revolution
• The earth revolves around the sun
and its seasons of one half of the
earth is different than the other half.
• The different parts of the earth the
direct ray of the sun for more hours
at the day at certain time of the year
caused the changing seasons of the
earth.

8. COMPARE ROTATION AND
REVOLUTION
• Both rotation and revolution involves a body turning about an axis. Rotation has
the axis inside of the body, whereas revolution has the axis outside the body. For
instance, the Earth rotates around its North-South Pole axis, and revolves around
the Sun.
• Rotation can be either right or left handed CW or CCW. The axis of a clock
through its center wrapping your fingers CCW, Thumb pointing out from the
face of the clock is right handed. The planetary rotation is referenced to solar
system rotation. The solar system rotation is referenced to galactic rotation.

9. THE FORMATION OF THE SEASONS
OF THE EARTH

10. WEATHER
In this section you will learn about different types of weather and its causes and
effect and we are going to deal with season and we are going to learn about the
precipitation and their types

11. VOCABULARY FOR THIS SECTION
• Weather: the conditions of the atmosphere at a particular location and time.
• Climate: the typical weather conditions at a particular location as observed over
time.
• Precipitation: falling water droplets in the form of rain, sleet, snow, hail.
• Moisture: water or other liquid diffused in a small quantity as vapor, within a solid,
or condensed on a surface.
• Elevation: the altitude of a place above sea level or ground level.

12. COMPARE AND CONTRAST
Weather
• It happens within an area.
• the state of the atmosphere, describing
for example the degree to which it is
hot or cold, wet or dry, calm or stormy,
clear or cloudy.
Climate
• It happens through bigger area like
something happened in one country
and it affect to its neighboring country
(a country near that country).
• Climate is the statistics of weather over
long periods of time. It is measured by
assessing the patterns of variation in
temperature.

13. COMPARE AND CONTRAST BY IMAGES
Weather Climate

14. TYPES OF WEATHER
• Water vapor: this determines whether there will be precipitation falling water
droplets in the form of rain, sleet, snow, or rain.
• Cloud cover: clouds may hold water vapor.
• Landforms and bodies of water: water heats slowly but also loses heat slowly.
Land heats rapidly but loses heat quickly as well.
• Elevation: as elevation above sea increase, the air becomes thinner and loses its
ability to hold moisture.
• Air Movement: wind moves the air and the solar energy and moisture that it holds.
As a result, weather can change very rapidly.

15. WHAT CAUSES THE WEATHER?
Causes
• Gases that Play a Part in Climate
Change
• Volcanic Eruptions
• Ocean Currents
• Solar Radiations
• Earth Orbital Changes
• The Greenhouse Effect
Effects
• Change in Rainfall Patterns
• Depletion of Arctic Ice
• Heat Waves
• Loss of Wildlife Species
• Rise in Sea Level
• High Temperatures

16. HOW DOES WEATHER RELATE WITH
SEASONS?
• In our country in every seasons we can understand different weather so different
weather happens in a specific season.
• Without season, we will get confused of weather that happens in our country.
• In different country it have different seasons and it may have different weather
because the orbit of the earth is divided into two hemispheres.
• The terms weather and season describe the prevailing geographical characteristics
of a specific region regarding climate and other aspects that define the atmosphere
which include humidity and temperature among others caused by earth movements
and changing atmospheric conditions.

17. PRECIPITATION
• Precipitation depends on the amount
of water vapor in the air and the
movement of that air.
• In meteorology, precipitation is any
product of the condensation of
atmospheric water vapor that falls
under gravity.
• The main forms of precipitation include
drizzle, rain, sleet, snow, graupel and
hail.

18. TYPES OF PRECIPITATION
Convectional
When the land warms up, it heats
the air above it. This causes the air
to expand and rise. As the air rises it
cools and condenses. If this process
continues then rain will fall.
Orographic
Orographic storms drop more
rain on the windward side of a
mountain and create a rain
shadow on the leeward side.
Frontal
Mid-latitude frontal storms feature
cold dense air masses that push
lighter warm air masses upward,
causing precipitation to form.

19. WEATHER EXTREME
In this section you will learn about the hazardous (dangerous) whether that
happened in the world

20. TYPES OF WEATHER EXTREMES
• Hurricane: a storm that forms over warm, tropical ocean waters.
• Tornado: a powerful funnel-shaped column of spiraling air.
• Blizzard: a heavy snowstorm with winds of more than 35 miles per hour and
reduce visibility of less than one-quarter mile.
• Drought: a long period without rain or with very minimal rainfall.
• Floods: when water spread over land not normally covered with water, it
happened with a lot of extremely heavy shower rain.

21. MOST HAZARDOUS WEATHER
Hurricane Tornado Flood

22. LEAST HAZARDOUS WEATHER
Blizzard Drought

23. THE ACTION OF THE WEATHER
EXTREMES