module sains

SCIENCE FORM 3 (NOTES) 20

16SM SAINS KUCHING

UTARA

Name : ___________________

Class: ___________________


LIST OF CHAPTERSFORM 1:

No Chapter Notes

1 Introduction to Science

2 Cell as a unit of life

3 Matter

4 The variety of Resources on Earth

5 The Air around us

6 Sources of energy

7 Heat

FORM 2:

1 Miss Azrinawatijj ©2016


No Chapter Notes

1 The world through Ours senses

2 Nutrition

3 Biodiversity

4 Interdependence among living organisms and the Environment

5 Water and solution

6 Air pressure

7 Dynamics

8 Support and movement

9 Stability

10 Simple machine

FORM 2:



No Chapter Notes

1 Respiration

2 Blood circulation and transport

3 Excretion

4 Reproduction

5 Growth

6 Land and its resources

7 Electricity

8 Generation of electricity

9 Stars and galaxies

10 Space exploration

TIPS ON HOW TO SOLVE A HOTS PROBLEM



Examples 1:


Read the question carefully

Step 1 : What? Identify what the question wants Explain/state/differentiate/suggest etc.

Step 2 : memory Write down the topics that related to the

question Write down every information you know about

the topic Narrow down your information based on step 1

Step 3 : matching Match the question with the related information

from your memory

Step 4 : generating answer Write your answer based on step 3 POINT + EXPLAINATION


Mrs Watie found that her newly bought curtains were too long when installed on her house’s windows. She sent the curtains to the shop and told the tailor to shorten the curtains about 2 spans (jengkal). When ready, Mrs Watie found the curtains measurement is different to the size that she wanted. Explain the cause of confusion between Mrs Watie and the tailor? [2 Marks]

Step 1Explain the cause of confusion between Mrs Watie and the tailor?

1 point (the cause) – 1 mark 1 explanation (reason) – 1 mark

Step 2- 1 span is the length between all 5 fingers.- Span is not a SI units- Everyone have different body size

Step 3

- Mrs Watie use her own hand to measure 2 spans- The tailor use his own hand- The probabilities that Mrs Watie and the tailor has different

size is high(relate your information with the information/concept that you know)

Step 4

Point : Mrs Watie and the tailor may have a different size of span.

Explanation : The span size used by Mrs Watie and the tailor may varies which cause the different in curtain measurement

Example 2:



Bile is produced in the liver and stored in the gall blader. The diagram below shows the action of bile on fats that goes into the alimentary canal. Why is this action important in the digestion of fats? [2 Marks]

Step 1Why is this action important in the digestion of fats?

1 point (effect of bile on fat) – 1 mark 1 explanation (reason for the importance of effect of bile on

fat ) – 1 mark

Step 2

- The action of bile on fat is called emulsification- Emulsification is the process of the fat change from one large

drop into small droplets- The small droplets have larger total surface area- The fat will be digest by an enzyme called lipase- To digest the fat, the fat will comes into contact with the

enzyme

Step 3

RELATE THE INFORMATION: The enzyme will works more efficient if more surface area

expose to it The emulsification helps to change the large drop of fat into

small droplets which have larger surface area As the smaller droplets, larger surface area, more enzyme will

comes in contact with the fat compare with larger drop of fat

Step 4

Point : Fat emulsification by bile produces smaller droplets of fat.

Explanation : Smaller droplets of fat has larger surface area that will increase the action of fats which will increase the efficiency of digestion of fats

HOT’s


Small droplets of fatLarge drop of fat

Bile

The importance of the action for digestion

The action The reason


1. Plant cells have wall that provide protection and support which is absent in animal cells. In your opinion, what will happen if animals have cell wall?[2 marks]

Step 1

Step 2

Step 3

Step 4



2. Philip found there are a lot of mosquitoes near his house area. Through reading, he got the idea that mosquito larvae can be killed by pouring oil on stagnant (bertakung) water. How this action can reduce the mosquito population in his area. Explain your answer. [2 marks]

Step 1

Step 2

Step 3

Step 4



3. A boy is suffering from digestive system problem. The diagram below shows part of the boy’s large intestine. Suggest the food should be taken by him in large quantities to prevent the problem faced. Justify your suggestion. [2 marks]

Step 1

Step 2

Step 3

Step 4


module sains

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