Test Yourself

Fill in the blanks with the correct word as below:

     wet   series    insulators    dry cell     symbols

1. Electrical components in an electrical circuit can be represented by ____________.
2. Electricity can only flow in one path in _______ circuits.
3. In a _________, chemical energy is changed into electrical energy.
4. Connecting wires are coated with _________.
5. We must not handle electrical appliances it our hands are________.

Electrical circuit

Compare the brightnes of bulbs in the parallel and series circuits

                                                           a) Paraller circuits

                                    b) series circuits

1) In which circuit, the bulbs will lit up brighter ?
    ________________________________________

2) State one disadvantage of a series circuit as compared to a     parallel circut.
   _______________________________________________

3) In this fair test, state the things that are:
    i) change   :_______________________
   ii) observed:_______________________

4) What can you conclude in this fair test ?
   ________________________________________________
      

animals facts

Can Rabbits and parrots see behind themselves without even moving their heads?

Answer：
Yes，although not directly behind themselves. Rabbits and parrots have a wider range of vision than humans, although much less of their vision field is “binocular” – this means they don't have depth perception, and that's why they are always moving their heads around, so they can see what they are looking at from different angles.

有趣的动物

小熊猫是一种珍稀的植食哺乳动物，身材比家猫稍大，达到了大约55  厘米。它长有和大熊猫一样能缩回的爪子，还有由手腕关节骨头伸长发育成 的伪大拇指。小熊猫的脚底长有厚厚的毛，可以用来抵御寒冷并且隐藏汗腺。

有趣的动物

艾艾狐猴是一种生活在马达加斯加的奇怪动物，它长有尖利的牙齿和细长的趾爪，其中指尤其锋利，可以钻开木头。艾艾狐猴使用中指挖开树木，寻找其中的 虫子作为食物，艾艾狐猴是本家族中唯一的一种。

叶海龙的名字源于中国古代的神话故事，它的样子就像一片漂浮在水中的藻类，叶海龙可以呈现绿、橙、金等体色，它全身由叶子似的附肢覆盖， 使其伪装性极强。只有在摆动它的小鳍或是转动两只能够独立运动的眼珠时才会暴露行踪。

Science Year 5 -Unit 2 Survival of the Species

Mammoths and dinosaurs are examples of animals that no longer exist. 

• Is it because of their gigantic size ? 
• Elephants look similar to mammoths. Why are they still surviving?

Rafflesia is an example of a plant species found in Malaysia that is facing extinction. 

• Why it happens?
• How do animals and plants ensure the survival of their species?

Conclusion: Shortage of food can cause extinction of species.

INSPIRING QUOTE 

A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron.-Horace Mann-