Slide presentation for Regent Secondary School stdents into weather and climate

1. Geography Sec 1 E learning Lesson

2.  What is weather and what is climate? Their
difference?
 Elements of climate and weather (Temperature
and Rainfall
 How do we measure temperature and rainfall?
 Different types of major climates.

3.  Weather is defined as the condition of a place
over a short period of time.
 Climate refers to the weather pattern of a place
over a long period of time.

4.  Use of
 Temperature
 Rainfall
 Wind

5.  Defined as the degree of hotness or coldness of
the air
 It varies:
 Throughout the day (eg. Cooler in the early morning
and hot in the afternoon)

6.  There is a difference between temperatures at
the equator and poles
 It is hotter near the equator then the poles

8.  The height of land (High mountain to lowland)
 As you go higher, it gets colder. As you get closer
to the surface, it gets warmer. This is because air
is warmest at the surface

9.  Temperature can be measured in different ways.
 You use a THERMOMETER to measure
temperature.
 First measurement: Maximum Temperature
(high) and Minimum Temperature (low).

10.  Mean Daily Temperature
 (Daily Max. Temperature + Daily Min.Temperature) ÷
2
 Daily Temperature Range
 Daily Max. Temperature – Daily Min. Temperature
 Mean Monthly Temperature
 Sum of mean daily temperature for the month ÷
Number days in month.

11.  Mean ANNUAL temperature
 Sum of monthly temperatures in the year ÷ 12
 Annual temperature range
 Max. mean monthly temperature – Min. monthly
temperature

13.  It is a wooden box with louvers (Openings)rculate
for the air to circulate.
 The roof is made of double layers to protect the
instrument from the direct rays of the sun
 It is painted white to reflect the heat from the
sun
 The box stands on four legs about 1 meter above
the ground.

15.  Refers to the amount of rain an area receives
over a period of time.

16.  We use a rain gauge

17.  It is made up of 5 parts (an outer casing, a copper
cylinder, a glass bottle, a funnel and a separate
measuring cylinder)

18.  Measured in millimeters (mm) or centimeters
(cm)
 Rainwater collected after 24 hours is emptied
and measured. This is called daily rainfall.
 Monthly Rainfall refers to rainfall in a month
 Annual Rainfall refers to rainfall in a year

21.  Wind is the movement of air from one place to
another.
 This is due to difference in air pressure caused by
heat.

22.  We use a Wind Vane to record the direction of the
wind.

23.  Tropical Climate
 It lies on between the equator and the tropic of cancer and
capricorn.
 The sun’s rays are more intense at or near the equator
 Experience high temperatures ranging from 20ºC to 30ºC
 Receives same amount of energy all year round
 Has high annual rainfall ranging from 1000mm to 2000mm
or more.
 Hot and wet climate
 Examples???

26.  Temperate Climate
 Lie between Tropic of Cancer and Arctic Circle, and
Tropic of Capricorn and Antarctic Circle
 Experience four seasons every year:
Spring, Summer, Autumn and Winter
 Receive different amounts of sunlight in different
periods of the year.
 Moderate temperatures and moderate rainfall
throughout the year
 Examples???

29.  Polar Climate
 Lies between Arctic Circle and North Pole, and
Antarctic Circle and South Pole.
 Experience summer and winter
 From March to September: North Pole experience six
months of sun. From October to February: South Pole
experience six months of sun
 Very Dry because of lack of water vapour
 Examples???

32.  Daily Activities
 Weather will determine whether we stay indoors or
participate in outdoor activities.

33.  Housing
 Humans like to live in places that are not too hot or
cold.

34.  Tourism
 Some climates provide different tourism experiences

35.  Production of Electricity
 Use of wind energy

36.  Food and Water Supplies
 Different crops thrive under different conditions

37.  Loss of lives and property
 Extreme conditions can destroy lives and property