Just enjoy yourself. ^_^
Tuesday, 20 November 2012
Tuesday, 13 November 2012
Anjing, Kucing dan Arnab
Anjing merupakan mamalia kanin dalam susunan karnivora. Telah dikatakan bahawa anjing dipelihara semenjak 12,000 tahun, tetapi mungkin selama 150,000 tahun berasaskan bukti genetik. Pada masa kini, anjing telah berubah menjadi beratus jenis dengan banyak variasi. Sebagai contoh, ketinggian dari beberapa inci (seperti anjing Chihuahua) sehingga hampir tiga kaki (seperti Irish Wolfhound), dan warna dari hitam ke putih, dengan merah, kelabu (biasanya dikenali sebagai biru), dan perang yang wujud dalam pelbagai varaiasi pola. Anjing, seperti manusia, adalah haiwan sosial dan pemburu berkelompok; kesamaan dalam tabiat mereka menjelaskan bagi tabiat mudah dilatih, suka bermain, dan keupayaan bagi menyesuai dengan kehidupan dalam rumah manusia dan keadaan sosial.
Anjing memenuhi pelbagai peranan dalam masyarakat manusia dan seringkali dilatih sebagai anjing bekerja. Bagi anjing yang tidak mempunyai tugasan tradisi, pelbagai jenis anjing sukan memberikan peluang bagi menunjukkan kemahiran semulajadi mereka. Dalam kebanyakan negara, peranan yang paling biasa dan kemungkinannya yang paling penting adalah sebagai teman. Anjing telah hidup dan bekerja bersama manusia dalam banyak peranan sehinggakan ketaatan mereka mendapat gelaran "teman terbaik manusia".
Kucing dikenali sebagai kucing bela jinak ialah mamalia karnivor kecil dari subspesis Felis silvestris catus. Ia adalah keturunankucing liar Afrika, Felis silvestris lybica dan mungkin dijinakkan 3,500 tahun dahulu di zaman Mesir purba, di mana ia digunakan untuk menjaga simpanan bijirin daripada tikus dan roden yang lain. Hari ini kucing merupakan salah satu daripada haiwan belaan rumah yang paling terkenal di dunia.
Kucing yang keturunannya berdaftar secara rasmi dipanggil kucing baka, kucing baka tulen atau kucing pertunjukan. Kucing baka tulen adalah kurang dari satu peratus daripada keseluruhan populasi kucing; kucing yang mempunyai baka campuran dirujuk sebagai bulu-panjang bela jinakdan bulu-pendek bela jinak.
Arnab merupakan sejenis haiwan mamalia yang tergolong dalam famili Leporidae yang tergolong dalam order Lagomorpha. Arnab mudah dikenali dengan telinganya yang panjang dan tirus, gigi acip tengah yang ketara dalam mulut, kaki belakangnya yang besar berbanding kaki depan, serta ekornya yang pendek. Arnab boleh hidup secara liar mahupun dijadikan haiwan peliharaan atau ternakan yang memberikan sumber makanan kepada manusia.
Bermacam-macam jenis arnab tinggal di kawasan padang rumput, hutan, gurun, tundra dan tanah lembap mengikut kesesuaian dengan spesiesnya. Kebanyakan spesies arnab tinggal dalam sarang bawah tanah yang dimasuki melalui lubang, tetapi berbeza pula dengan arnab dalam genus Lepusyang bertempat tinggal di atas tanah dengan kawasan rumput yang rata sebagai sarang. Kebanyakan spesies arnab tinggal secara berkelompok.
Tuesday, 6 November 2012
Exercise
Diagram 1
Diagram 1 below shows chicks in a coop.
The chicks become weak after two days. Which of the following can solve this problem?
I Move some chicks into another coop
II Put the chicks in a bigger coop
III Put more chicks into the coop
IV Supply more water in the coop
A. I and II
B. I and III
C. II and IV
D. III and IV
The chicks become weak after two days. Which of the following can solve this problem?
I Move some chicks into another coop
II Put the chicks in a bigger coop
III Put more chicks into the coop
IV Supply more water in the coop
A. I and II
B. I and III
C. II and IV
D. III and IV
Diagram 2 shows four types of animals.
Diagram 2
Which is the best conclusion about the animals?
A. Animals protect their species from the extreme weather
B. Animals ensure the survival of their species
C. Animals feed their youngs
D. Animals have the same way of reproduction
A. Animals protect their species from the extreme weather
B. Animals ensure the survival of their species
C. Animals feed their youngs
D. Animals have the same way of reproduction
Monday, 5 November 2012
Saturday, 3 November 2012
All about Plants Dispersal.
by Wind
The Cottonwood
by Explosive mechanism
Himalayan Balsam seed exploding (slowed x33)
by Animals
flower red rose blooming
by Water
Floating Coconut
UPSR Science: How to Answer Section B
Science section B is the most difficult part in Science paper.
You need
to complete the section B within 30min. It carries 20 marks. In order to
answer the section B well, you need to understand the pattern of the question and the
keywords.
Here are thel keywords that you need to understand in section :
-constant variables (variables that are kept the same), responding variable, manipulated variables
(changed), aim (purpose), hypothesis (relationship), inference (reason) and
conclusion.
Let us look at the differences between constant variable, responding
variable and manipulated variable.
Constant variable, Responding variable, Manipulated variable
Constant variable: Does not change or varying. Sometimes they will use the
term as 'kept constant'
Responding variable: To act in return or in response to an external factor or
the stimulation.
Manipulated variable: Controls individual factor causes. Another term
used is 'changed'
Mnemonic Graph & Table analysis
When come to data analyzing, here are some mnemonics that can help you to
figure out the
responding variable and manipulated variable from graphs and tables:
- Left Change Right Respond
- Up Change Down Respond
- Horizontal Change Vertical Respond
and remember that Unchanged is constant , to look for constant variable.
Left Change Right Respond
Diagram 1 shows an investigation of frictional force. Table 1 shows the
result of the investigation.
Refering to table 1, the data on the left shows the types of surface to use in
the investigation. It is controlled by the investigator and will affect the end
results of the investigation. Thus, surface is
manipulated (changed) variable .
The data on the right shows the distance travelled by a toy car. The changes
is due to the surface used. Thus, the end results on the right column is depend
on (respond to) the changes on left. Distance travelled by a
toy car is responding variable.
What is the unchanged data? The height of the surface and the toy car.
The student will use the same toy car and same height of the surface for every
test. So, toy car and height are
constant variables.
Up Change Down Respond
It means the data on the upper part of the table is manipulated (changed) variable. The data at the bottom
part of the table
is responding variable.
(Table 2)
Ah Beng prepared 2 beakers which are filled with 300ml water. The water
temperature used is 40Cº and 100Cº respectively. Ah Beng adds in 8 table spoons
of sugar into each beaker and stirs until the sugar is fully dissolved. Table 2 shows the result of an investigation about the
time taken to dissolve the sugar.
In this investigation, the water temperature is
manipulated variable, because changes in the water temperature will affect the end result of the time taken
for sugar to dissolve in water.
The data at the bottom (Time taken for sugar to dissolve)
responds to the manipulated variables. The result depends on the
temperature of the water.
Constant variable are beakers and
water volume, because both tests are using the same bealer size and the same
amount volume of water.
Horizontal Change Vertical Respond
The data on horizontal axis is manipulated (changed) variable.
The data on the vertical axis is responding variable.
(Diagram 2)
Diagram 2 shows a bar chart on the number of telephone numbers memorised by 5 people
aged 25, 35, 45, 55 and 65 years.
In this investigation, the age is the
manipulated variable. As the age changes, the number of telephone
numbers could be memorised changes. The number of telephone
numbers that can be memorised is responding variable.
The result depends on the age of the person.
Constant variables are the numbers of telephone number and
the time given to memorise the telephone numbers used in the
investigation must be the same.
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