Prac 1 Report SCE3109
Transcript of Prac 1 Report SCE3109
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PRACTICAL 1CLOUD AND WEATHER
PRACTICAL 1
Topic:Clouds and Weather
Introduction:
Figure 1: From NASA Astronaut Photograph
When water on land or in the ocean evaporates, it turns from a liquid to water
vapor and rises to the sky. The water vapor cools and turns back into a liquid in the
shape of tiny droplets. The result is clouds, unless it's on the ground. When enough
droplets get together they fall to the ground as rain or if it's very cold, they freeze and
fall down as snow, sleet or hail. (www.kidzworld.com/.../1352-what-are-clouds - United
States -)
All clouds are a form ofwater. Clouds are condensed atmospheric moisture in
the form of minute water droplets or ice crystals. The creation of a cloud begins at
ground level. The sun heats the earth's surface, the warm ground heats the air, which
rises. The air contains variable amounts of water, as vapor, that has evaporated from
bodies of water and plants. Air at ground level is denser than air higher up, and as the
warm air rises, it expands and becomes less dense. Expansion cools the air and as the
air cools, the water vapor that is present in the air, condenses into tiny microscopic
droplets.
Cloud formation depends on how much water is in the atmosphere, the
temperature, the air current, and topography. If there is no water, no clouds can form. If
condensation occurs below the freezing point, the cloud is made of ice crystals. Warm
and cold air fronts, as well as topography can control how air rises. Clouds that form
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http://science.jrank.org/pages/7301/Water.htmlhttp://science.jrank.org/pages/3501/Ice.htmlhttp://science.jrank.org/pages/6606/Sun.htmlhttp://science.jrank.org/pages/7301/Water.htmlhttp://science.jrank.org/pages/3501/Ice.htmlhttp://science.jrank.org/pages/6606/Sun.html -
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during vigorous uplift of air have a tall, stacked appearance and clouds formed by gentle
uplift of air currents have a flat or stratified appearance. One can make short-term
forecasts by observing clouds, as any change in the way a cloud looks indicates a
change in the weather. (http://science.jrank.org/pages/1530/Clouds.html)
Clouds play an important role in the energy balance of Earth. They cool the earth
by reflecting sunlight back out to space. More importantly, clouds replenish our water
supply. It's a never-ending cycle but one that keeps the earth balanced in water cycle
process. There are a lot of cloud's shape, size and texture we can look in the sky.
Clouds are put into categories according to their shape, how high they are in the sky,
their size, how fast and in what direction they are moving, and so on. The three different
types of clouds are high clouds, middle clouds and low clouds.
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PRACTICAL 1CLOUD AND WEATHER
High clouds(from 5 to 13 km in the sky)
Middle clouds(2 to 7 km)
Low clouds(0 to 2 km)
a. Cirrus
b. Cirrocumulus
c. Cirrostratus
a. Altocumulus
b. Altostratus
c. Nimbostratus
a. Stratocumulus
b. Stratus
c. Cumulus
d. Cumulonimbus
Table 1: Classifications of clouds
The suitable location that will be choose for this practicals observation is the sky
at the near the Block C at the Keningau Teacher Training Institute The reasons why we
choose this area are because that area easy to visited, wide area, we can see a lot of
clouds formed there from different sides, not too far from our place and comfortable for
us to observe.
The date of this practical is started on 27 th January 2010 until 9th March 2010.
Then, the time of observation is fixed and implemented at day from morning until
evening but not at night. The duration of observation is every 4 hours every day which is
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start from 6.30am, 9.30am, 1.30pm, 4.30pm, and 6.30pm. There isnt any observation
after 6.30pm because we cant see the cloud at the dark night and limited to capture by
using digital camera.
How data are collected:
a. Temperature:
Temperature measured by thermometer. Thermometers measure the air
temperature via the expansion or contraction of a liquid or a metal as the air
temperature changes. Temperatures vary greatly throughout the world this is
because of the unequal amount of heat received from the sun on the earth's
surface and because of the movements of air in currents caused by this
unequal heating. Areas near the equator receive the largest amount of heat
annually and Polar Regions the least.
Figure 2: Thermometer
b. Humidity:
Humidity is the measure of the water vapor content in the air, combined with
the temperature, it causes many weather conditions. The amount of vapor in
a given volume of air at a given time is called the absolute humidity. While
relative humidity is the amount of water vapor that exists in a gaseous mixture
of air and water, hot and cold weather are more comfortable when the relative
humidity is low. Clouds are formed when water vapor condenses high above
the ground. When cloud droplets grow larger and become too heavy to be
held up by the air currents, they fall to the ground in a form of rain. If the
raindrops fall through a layer of air which is below freezing, the drops freeze
and fall in a form of snow.
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Psychrometers, or wet bulb thermometers, measure relative humidity. A
psychrometer uses two thermometers, one bulb of which is covered with a
wet cloth. As the cloth dries, the cooling effect of evaporation lowers the
temperature on that thermometer. Then the temperatures on the two
thermometers are compared on a special chart to find the relative humidity.
Often, the relative humidity is the weather condition that makes people the
most uncomfortable.
Figure 3: Psychrometer
c. Windy and air pressure:
Wind is caused when air moves from an area of high pressure to one of low
pressure. The greater of the difference between the areas, the stronger of
the wind. Since the equator is constantly hot and the poles are cold, there is
a general pattern to air circulation on Earth. In many areas the wind usuallyblows from the same direction. Wind speed is measured with an
anemometer; wind direction is indicated with a wind vane. But in our
observation we havent anemometer to measure the wind. Just observe by
our five senses.
Figure 4: Anemometer
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Barometers measure the air pressure, which is sometimes referred to as
barometric pressure. The pressure of the air on the pool of mercury in the
barometer causes the mercury to rise in a tube. We measure the height of
mercury in the tube in inches. Therefore, air pressure is often stated in inches
of mercury. More common are anaeroid barometers, which don't contain
mercury but have a small box inside instead. The air pressure on this box
causes it to change shape, moving a needle on a gauge that indicates the air
pressure. Normal air pressure readings vary from 28 to 31. Quick changes in
air pressure often mean a change in the weather is about to occur. That's why
you'll often hear and read about barometric pressure during local weather
reports.
Figure 5: Barometer
d. Dryness:
Dryness is closely related with the temperature and humidity. The amount of
vapor evaporated into the sky will affect the dryness of an area. When the
temperature is increases, the water vapor also increases. At the same time
the dryness of the location also increases. If there is no rain and no wet that
means the dryness is high and if there is no water, no clouds can form.
e. Overcast:
Overcast is the state of the sky when it is covered by clouds. The sky will be
seen gloomy semidarkness caused by cloud cover. May be it will be rain.
f. Brightness:
Brightness is the quality of being luminous; emitting or reflecting light. If the
sky isnt covered by clouds that means the brightness is high and no rain.
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Aim:
To observe and predict the different types of cloud affect the weather in the sky of
Institute of Keningau Campus, Bukit Langsat, Keningau
.
Problem:
What are the types of cloud formed affect the weather at Malaysia Teacher Training
Institute of Keningau Campus, on the hill top of Bukit Langsat, Keningau?
Hypothesis:
The types of clouds available in an area will affect the weather based on the basis
shape, appearance and height of formation. Hence, every different type of clouds
available will affect the weather at the Malaysia Teacher Training Institute of Keningau
Campus either rainy or bright day due the changes of temperature, humidity, dryness,
overcast or brightness.
Variables:
a) Manipulated variables: Presence of clouds
b) Responding variables: The types of clouds availablec) Fixed variables: The location where the cloud available observed and the
duration of observation.
Apparatus:
i) Thermometer
ii) Barometer
iii) Camera
iv) Watch
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Procedure:
1. The sky at Malaysia Teacher Training Institute of Keningau Campus will be
observed at a fixed time every day (at morning, afternoon and evening).
2. The clouds appeared are observed and captured by digital camera.
3. The data of observations such as temperature, humidity, brightness and so on are
collected and recorded and filled in the table 2 below.
4. The procedure 1 until 3 repeated for a period of two weeks.
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Result:Table 2: 27 January 2010
Time Picture of cloud Type ofcloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Altostratus 26 High Slow Less - Moderate
9.30 a.m Cirrus 28 High Slow Less - Moderate
1.30 p.m Nimbostratus 28 High Moderate - Moderate Less
4.30 p.m Nimbostratus 28 High Slow Moderate - High
6.30 pm
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Table 3: 28 January 2010
Time Picture of cloud Type of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Altostratus 27 Moderate - Moderate - High
9.30 a.m Cumulus 30 Less - High - High
1.30 p.m Cumulus 36 Less Slow High - High
4.30 p.m Stratocumul
us
34 Less Slow Moderate - High
6.30 pm Nimbostratus
32 Less Slow Moderate - moderate
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Table 4: 29 January 2010
Time Picture of cloud Type ofcloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratus 26 High Moderate Moderate - Moderate
9.30 a.m Cumulonimb
us
29 Moderate Moderate Moderate - Moderate
1.30 p.m Cumulus 36 Less Slow High - high
4.30 p.m Cirrocumulus and
altostratus
34 Less Moderate High - High
6.30 pm Stratus andcirrocumulus
30 Moderate Moderate Moderate - Moderate
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Table 5: 30 January 2010
Time Picture of cloud Type ofcloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Nimbostratus
26 High Slow Less - Less
9.30 a.m Altostratus 30 High Slow Less Yes Moderate
1.30 p.m Cirrocumulus
36 Less Slow High - High
4.30 p.m Cirrocumulus
38 Less Slow High - High
6.30 pm Stratus 28 Less Slow High - High
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Table 6: 31 January 2010
Time Picture of cloud Type of cloud Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratocumulus
9.30 a.m
1.30 p.m Cumulus
4.30 p.m Nimbostratus 32 Less Slow High - High
6.30 pm Cirrostratusand cumulus
28 Moderate Moderate Moderate - Moderate
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Table 7: 1 February 2010
Time Picture of cloud Type of cloud Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratocumulus 26 High Slow Less - Less
9.30 a.m Stratocumulus
1.30 p.m
Cumulus andcirrus
36 Less Slow High - High
4.30 p.m Cumulonimbus 32 Less Moderate High - High
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6.30 pm Stratus andcumulus
28 Less Moderate Moderate - Moderate
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Table 8: 2 February 2010
Time Picture of cloud Types of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Nimbostratus 24 High Moderate Less Yes Less
9.30 a.m Cumulus and
altocumulus
27 High Slow Less - Less
1.30 p.m Stratocumulus 30 Moderate Slow Moderate - High
4.30 p.m Cumulus 31 less Slow Moderate - high
6.30 pm Cirrus 28 Moderate Moderate Moderate - Moderate
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Table 9: 3 February 2010
Time Picture of cloud Type of cloud Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratus 24 Moderate Moderate Moderate - High
9.30 a.m Cumulonimbu
s
27 Moderate Less Moderate - High
1.30 p.m Cumulus 31 Less Less High - High
4.30 p.m Cirrostratus 33 Less Less High - High
6.30 pm Cirrus 30 Less Moderate Moderate - High
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Table 10: 4 February 2010
Time Picture of cloud Type of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Nimbostratu
s
26 Less Slow Less - Moderate
9.30 a.m Cirrostratus 28 High Moderate High - Moderate
1.30 p.m Cumulus 32 Less Slow High - High
4.30 p.m Cirrocumulus
31 Less Moderate High - High
6.30 pm Cirrocumulus
30 Less Moderate Moderate - Moderate
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Table 11: 5 February 2010
Time Picture of cloud Type of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratocumulus
24 High Moderate Less - Moderate
9.30 a.m Stratocumulus
27 High Slow Moderate - High
1.30 p.m Stratocumulu
s
32 Less Slow High - High
4.30 p.m
6.30 pm Stratus 27 High Slow Moderate - Moderate
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Table 12: 6 February 2010
Time Picture of cloud Type of cloud Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Stratocumulus 24 High Moderate Less - Less
9.30 a.m Cumulonimbu
s
1.30 p.m Cumulus 33 Less Moderate High - High
4.30 p.m Cirrostratus 35 Less Slow High - High
6.30 pm Cirrostratus 29 Less Moderate High - Moderate
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Table 13: 7 February 2010
Time Picture of cloud Type of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m
9.30 a.m
1.30 p.m Cumulus 32 Less Less High - High
4.30 p.m Cumulus 31 Less Moderate High - High
6.30 pm Nimbostratus
29 Less Moderate High - Moderate
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Table 14: 8 February 2010
Time Picture of cloud Type of cloud
Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m 28 High Slow Less - High
9.30 a.m Cumulus 26 High Moderate Less Yes High
1.30 p.m Stratocumulus
30 Moderate Moderate Moderate Yes Moderate
4.30 p.m Stratocumulu
s
32 Less Slow High - High
6.30 pm Cirrostratus
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Table 15: 9 February 2010
Time Picture of cloud Temperature Humidity Windy Dryness Overcast Brightness
6.30 a.m Cirrostratus 23 High Moderate Less Yes Less
9.30 a.m Cumulonimbu
s
28 Moderate Slow Moderate - High
1.30 p.m
4.30 p.m Cirrostratus 32 Less Slow High - High
6.30 pm Cirrocumulus 29 Moderate Slow Moderate - moderate
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Discussion:
1. As long as our observation, there a lot of different types of clouds were formed.
Three types ofclouds can be seen in the sky at the selected area. They are a lot of
pictures of different clouds were collected every day. They are:
a. High Clouds
Cirrus
Cirrocumulus
Cirrostratus
b. Middle clouds
Altocumulus
Altostratus
Nimbostratus
c. Low clouds
Stratocumulus
Stratus
Cumulus
Cumulonimbus
2.
High clouds(from 5 to 13 km in the sky)
Middle clouds(2 to 7 km)
Low clouds(0 to 2 km)
a. Cirrus
Appear as wispy thinveils or detachedfilaments composedmostly of ice. Strongwinds aloft often createthe fibrous ice trailswhich tend to curl attheir ends. Cirrus cloudswith hooked filaments
a. Altocumulus
Form as large massesin patches or rows that
may or may not mergewith one another.Individuals usually havea sharp outline as theyare composed of waterand not ice.
a. Stratocumulus
Appear as lumpy, low
lying clouds that covermuch of the sky. Theyform patches or rows ofclouds with some bluesky between theindividual cloud units.
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are sometimes called"mare's tails". Cirrusclouds are associatedwith an approachingwarm front.
b. Cirrocumulus
Clouds appear as whitepatches made up ofvery small cells orripples. The globules ofcloud are arranged in aregular pattern and arecommonly called"mackerel sky" for theirsimilarity to the scales ofa fish.
b. Altostratus
A formless layer ofgrayish cloud that covermost if not all the sky.
Altostratus clouds are
denser than thecirrostratus. The sun isbarely visible throughaltostratus cloudsgiving the appearanceof a "watery sun".
b. Stratus
Appear as a uniformdark-gray layer of cloudscovering the entire sky.Stratus clouds oftenform along warm fronts
and can give way tonimbostratus as the frontapproaches your location. Stratus cloudsmay also form by thelifting of a fog bank.
c. Cirrostratus
Cirrostratus is atransparent, whitish veilof cloud that usuallycovers much of the sky.Sometimes cirrostratusclouds are sotransparent that you canbarely see them. Theyoften create a haloaround the sun or moon.
Cirrostratus cloudsthicken and grade intoaltostratus clouds withthe approach of a warmfront.
c. Nimbostratus
Nimbostratus is dark-gray layer of clouds thatcover the entire sky.The prefix "nimbo"indicates that theseclouds are precipitating.Nimbostratus cloudsare typically foundalong a warm frontproducing low intensity
precipitation that lastsfor several hours.
Cumulus
A type of cloud withnoticeable verticaldevelopment and clearlydefined edges. Cumulusclouds are oftenprecursors of othertypes of clouds, such ascumulonimbus, wheninfluenced by weatherfactors such as
instability, moisture, andtemperature gradient.
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c. Cumulonimbus
A type of cloud that istall, dense, and involvedin thunderstorms andother intense weather.cumulonimbus cloudsmay be associated withsevere weather phenomena such ashail, waterspouts andtornadoes.
3. Identifying clouds can be difficultat first. Sometimes the clouds seem same with the
some clouds but actually its the different type of cloud. We need to rely some of
features by referring the information gathered from internet to differentiate all the
collected pictures of cloud. The classification should be including the shape of
cloud, appearance, altitude, temperature, humidity, winds, size of cloud, overcast,
brightness, and so on.
4. Geographic features in your area such as front and mountains can affect local cloud
and weather. As we know our institute is on the mountain and warmer front where a
warm air mass moves into a cold air mass. Because the warm air is less dense, it
slides up and over the colder air. At first, cirrus clouds might appear. They may be
followed by stratus clouds and some precipitation, rain which is brought by
nimbostratus clouds. When the front passes, the sky clears and the air pressure
rises. Temperatures also rise as warm air replaces cold air.
5. Weather simply refers to the condition of the air on earth at a given place and time
whether it is warm or cold, dry or wet, blowing or calm. The condition of air and how
it acts to create weather is influenced primarily by two things heat (the sun) and
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water which is closely related with formation of cloud. Weather conditions are
determined by six major factors:
a. Air temperature
b. Air pressure
c. Humidity of the air
d. Amount and kind of cloud cover
e. Amount and kind of precipitation
f. Speed and direction of the wind
6. From our observation the data collected are:
a. Temperature:
Temperature measured by thermometer. We measure the temperature
according to the introduction above. The thermometer is put just in the air at
the fixed observation area and measure the highest reading as the
temperature reading for that time. Every time due to the changes of the cloud
and weather the temperature also changed.
b. Humidity:
Humidity is the measure of the water vapor content in the air, combined with
the temperature, it causes many weather conditions. Humidity is measured bypsychrometers, or wet bulb thermometers, but out institute inadequate of
apparatus such the psychomotor or wet bulb thermometer. So, we decide to
measure the humidity by manual method which is we just feel it by our five
senses.
c. Windy and air pressure:
Wind is caused when air moves from an area of high pressure to one of low
pressure. Wind speed is measured with an anemometer; wind direction is
indicated with a wind vane. The anemometer rotates at the same speed as
the wind. It gives a direct measure of the speed of the wind. Wind speed is
measured by using the Beaufort Wind Scale which is a scale of 0-12 based
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on visual clues. Depending on the ability of students, it is probably sufficient
that they recognize calm air, and gentle, moderate, and strong breezes. For
example, students can use a simplified scale such as the following:
Wind Speed (KmPH) Term Description
0-5 Calm Smoke goes straight up
6-20 Light Wind is felt on face; weather vanes turn, leaves rustle
21-39 Moderate Raises dust; flags flap
40-61 Strong Large branches move; umbrellas turn inside out
62 or more Gale / Whole Gale
Table 17: Beaufort Wind Scale
But in our observation we havent anemometer to measure the wind. So we
decide to make our own anemometer.
Figure 6: Measure the Wind Speed with the Simple Anemometer
Procedure to measure the wind speed with the simple anemometer
This anemometer has four cups which catch the wind and cause the
anemometer to spin. The inward curve of the cups receives most of the
force of the wind. That's what makes the cups move. The more spins per
minute, the greater the wind velocity.
Arrange four (4) plastic drinking straws to form a cross and tape them
together at the center.
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Staple the top side of one drinking cup, such as the small paper cups
designed for bathroom dispensers, to the end of each straw, so the open
ends of the cups all face the same direction.
Push a straight pin through the center of the straws into an eraser on the
end of a pencil. This provides the axle.
Mark one of the cups; this will be the one they use for counting when the
anemometer spins. NOTE: When using this anemometer, 10 turns per
minute means the wind speed is about one mile per hour. If possible, it
would very useful to use a commercial anemometer to determine an
approximate determination. For example, "when our anemometer read 20
spins a minute, the commercial anemometer read 2 miles per hour."
Blow on the anemometer or turn an electric fan on low to make sure that it
spins easily. How many times the anemometer will spin in one minute?
We use the table below to record the wind speed and relate it with the
Beaufort Wind Scale.
Time Interval Number of Spins
Barometers measure the air pressure, which is sometimes referred to as
barometric pressure. However the barometer that wed borrow was not
functioned well. So, we collect the data without barometer but by using our
own barometer which is we need is a glass, a straw and a balloon plus tools
we'll have. The finished product will allow you to measure atmospheric
pressure. This method is one of the measurements that meteorologists use to
make forecasts
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Dk Hetty Rosnanee binti Nuing, Ling Mee Choo, and Siti Zainon binti Termin
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Figure 7: Measure the Air Pressure without the Aneroid Barometer
d. Dryness:
Dryness is closely related with the temperature and humidity. The amount of
vapor evaporated into the sky will affect the dryness of an area. When the
temperature is increases, the water vapor also increases. At the same time
the dryness of the location also increases. If there is no rain and no wet that
means the dryness is high and if there is no water, no clouds can form.
e. Overcast:
Overcast is the state of the sky when it is covered by clouds. The sky will be
seen gloomy semidarkness caused by cloud cover. May be it will be rain.
f. Brightness:Brightness is the quality of being luminous; emitting or reflecting light. If the
sky isnt covered by clouds that means the brightness is high and no rain.
7. As long as we do this practical, there are some problems and weaknesses that we
had faced such as:
a. We do not have the appropriate or effective apparatus to collecting all data
such as barometer and anemometer.
b. There is no suitable location to observe cloud as the geographical features
at the institution which is high on a hill and disrupted vision due to the
trees, buildings and mountain range.
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PRACTICAL 1CLOUD AND WEATHER
8. The implications of our finding data to our daily live are:
a. We should be able to gain an appreciation of the importance of
understanding weather.
b. Important for us to planning events and recreationalactivities.
c. Consider people involved in travel and transport. For examples:
nervous air traveler avoiding a bumpy flight (turbulence)
Cook Strait ferry sailings cancelled
Airports closed by fog. Fog or exceptionally low ceilings can
prevent many aircraft from landing and taking off.
d. Encourage us able to predicting the weather based on the cloud formation
and types in the sky.
e. We will also consider why weather is so important to agriculture. Climate
and weather are vitally important in agriculture. Frosts at critical times can
wipe out crops. If we do not have rain, then pastures and crops will not
grow. Food will need to be transported further to get to where it is needed
in a market, and further travel means costs will rise. Consumers pay more.
When there is a drought, failed crops will mean farmers will get reduced
returns or get nothing for their work. Drought areas means pasture and
water are usually in short supply and causes severe hardships for those
individuals and communities where it occurs.
f. When we teach this topic in school to identifying clouds is a terrific way for
students to put their skills of observationand classification to work, as well
as to launch them into weather prediction. Clouds are only one of the
many factors including fronts, winds, pressure systems, etc. that
contribute to predicting weather, but they areone that students can easily
observe. Identifying clouds can be difficultat first. Encourage students to
make their best guesses based on the dominantkind of clouds they see,
or to list more than one type.
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Conclusion:
Hypothesis accepted. The types of clouds available in an area will affect the weather
based on the basis shape, appearance and height of formation. Hence, every different
type of clouds available will affect the weather at the Malaysia Teacher Training Institute
of Keningau Campus either rainy or bright day due the changes of temperature,
humidity, dryness, overcast or brightness.
References:
http://en.wikipedia.org/wiki/Cloudhttp://en.wikipedia.org/wiki/Cumulonimbus_cloudhttp://en.wikipedia.org/wiki/Cumulus_cloud
http://ga.water.usgs.gov/edu/watercyclecondensation.htmlhttp://hubpages.com/hub/Factors-that-Affect-the-Weatherhttp://science.jrank.org/pages/7327/Weather-Humidity-clouds-precipitation.htmlhttp://science.jrank.org/pages/7328/Weather-Atmospheric-pressure-winds.htmlhttp://science.jrank.org/pages/7332/Weather.htmlhttp://teacher.scholastic.com/lessonrepro/reproducibles/profbooks/cloudkey.pdfhttp://vortex.plymouth.edu/clouds.html/http://www.ciese.org/curriculum/weatherproj2/en/docs/anemometer.shtmlhttp://www.kidzworld.com/article/1352-what-are-cloudshttp://www.tutorvista.com/ks/how-do-clouds-formhttp://www.ussartf.org/predicting_weather.htm
http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/atmospheric_moisture/clouds_3.htmlhttp://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/atmospheric_moisture/clouds_2.htmlhttp://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/atmospheric_moisture/clouds_1.htmlhttp://www.wildwildweather.com/clouds.htm