Group reflection on Archimede's Principle.

We practically have reach the end of the study of Archimede's Principle. I, Haida , Fatin, Syafiqah and Asmidah are here to tell that we understand almost 80% of the whole Archimede's Principle and the project we have been doing. This project makes us more alarmed at Archimede's principle questions.. We really appreciate the hardwork of Pn. Wahida on teaching us . Thank you Pn. Wahida for accompany us till the end. 

SPM 2010 question.

9. a) weight = force/area
    b) 1. - The weight of the father is heavier than the boy.
            - The volume of water displaced by the father is more than the boy.
            - The buoyant force act on the father is more than the boy.
        2. - When the water displaced increase, the buoyant force increases.
            - When the weight of water displaced increases, the buoyant force also increases.
        3. - Archimede's Principle.
    c) -When the wooden block is submerged in water, the buoyant force is greater than its weight.
        - Hence the buoyant force puches the block upwards.
        - This occurs until the block reaches the surface when the weight of water displaced, the buoyant force 
           decreases and becomes equal to the weight of the block causing it to float.
   d) 1. Streamline shape- to reduce water friction.]
       2. Light material - use light material like bamboo to make it float.
       3. Large size raft - so it is easier to accommodate participants.
       4. Tie the bamboo - tie the bambooin layers. Put motor at the end of the raft to increase the speed of the 
           raft.

Based on the study of buoyant force and the hydrometer, i finally know what is hydrometer, what is the use of hydrometer and how the buoyant force effect the boat and ships. Just now i realized the existence of safety line on boats and how heavier people affect it. Thank you to Pn. Wahida for giving me such a chance to improve myself and experience of using the application on daily life. Thank you. 


                                                                                                    - Nur Haida C.M.A @ SMSM X. -

I understand what i read and learn about the hydrometer and buoyant force. However, i still have an unclear settings on the formula .
     
                                                                                                                        -Syafiqah Azhar-

I understand the concept of buoyant force. Buoyant force depends on mass of an object. Therefore, i know how to use hydrometer in this experiment and also the formula.


                                                                                                                -Nurul Asmidah-

Self reflection.

I understand about the buoyant force and i also know how to use a hydrometer. Besides that i also know to use the formula when i need it.

                                                                                                                    -Nur Fatin Nazifah-

6. a) The hydrometer is used to detect density.
    b) The purpose of having lead shot at the bottom of the hydrometer is to keep the hydrometer upright.
    c) The hydrometer is calibrated in such a way that the readings of the scale is increasing downwards because 
        it consist of  a tube with a bulb at one end. Lead shots are placed in the bulb to weigh it down and enable 
        the hydrometer to float vertically.

5. a) The maximum buoyant force experianced by the boat is 17400N.
    b) The men weight 60 kg is eligible to go on the boat. This is because the men will not add many force on the
         boat. If the boat become heavy, more buoyant force will act on it and the boat will sink deeper eventually 
         go over the safety line.

I'm here to tell that i can understand almost everything taught. The submarine application has made me understand more. Than you for helping.

                                                                                                         -Nur Fatin Nazifah  Binti Nazri-

Thank you for this project i can easily answer questions on the application of Archimedes.
i'm on my way to the perfection. YES!

                                                                                                         -Nurul Asmidah Md Latif-

I have now understand the application of Archimedes on submarine.. How the submarine float and sink.. Only some of it i still can't differentiate well.. Thank you.
 
                                                                                                                       -Syafiqah Azhar-

Personal Reflection

Based on the Application of Archimedes on submarine. I have clear understanding between me and the application. I can now answer question on submarine wholeheartedly.

                                                                                                      -Nurhaida C.M.A @ SMSM X.-

The Application of Archimedes on Submarine.
    

The submarine is another application of 'Archimedes Principle'. On surface, the submarine floats, with its conning tower and most of the deck, being clear of the water.

Submarine diving
The boat is provided with large ballast tanks which can be filled with water. This increases the weight of the submarine, so that it sinks into the sea, so that it sinks lower.
Horizontal rudders are titled to make the submarine drive downwards when the tanks are practically full and the boat is ready to submerge. When the submarine is ready to surface, the rudders are moved to drive the boat upwards, and compressed air is forced into the ballast tanks to drive the water out so that the submarine can rise.
Most of the marine animals also use this principle to remain at a selected level in the sea. For example, fish has an air sac, called a swim bladder in its body. This is filled with air and usually occupies about 5 per cent of its total body volume. Its size is adjusted so that the fish is posed at the depth at which is usually lives and feeds. At that level, the condition of its weight is exactly balanced by the upthrust it experiences. To swim up and down the fish uses fins.

The conclusion from what i've done is that the experiement was a big success. I finally understand what does it means by the weight of water displaced is the same with the weight of  load. Eventhough the experiment was a success, i did a unintentionally did a mistake by spil the water from the beaker..  But its not a case.. Thank you.

                                                                                                        -Nurul Asmidah-

After doing the experiment, i now can master the Archimede's Principle.
I have my part succesfully with the task given according tp the procedure. The experiment was a big success.

                                                                                                       -Fatin Nazifah-

From the experiment, i have now understand the concept of Archimede's Principle.
Throughout the experiment i have done a mistake by measuring the water needing wrongly.

                                                                                                -Syafiqa Azhar-

Personal reflection on Archimedes Principle experiment

Throughout the whole experiment, it has been okay.. Eventhough everything was complicated at the beggining, we succeed to go through it..
Actually, i've made a mistake by taking a false reading and have troubled my members.

After the experiment, i can finally understand almost 90% of  Archimede's Principle.
I'm indebtedness on the experiment and Pn. Nurul Wahida.
Thank you for reading.
     
                                                                            -Nur Haida C.M.A @ SMSM X. -

The experiment of Archimede's Principle.

This is the experiment that we have done a few days ago.

Archimedes principle.                                                                                                      

The weight of the displaced fluid is directly proportional to the volume of the displaced fluid (if the surrounding fluid is of uniform density). In simple terms, the principle states that the buoyant force on an object is going to be equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational constant, g. Thus, among completely submerged objects with equal masses, objects with greater volume have greater buoyancy.

Nur Haida Che Mat Ariffin
: i have understand of what have been thought.
: only there are some of it that is still unclear

Nurul Syafiqah Binti Azhar
: i can only understand what i've learn at beggining of the topic.

Nurul Asmidah Binti Md Latiff
: I'm sorry but i can't really understand  what have been taught.
: i'll try hard.

Nur Fatin Nazifah
: from what i've learn from Pn. Wahida, i have understand most of it..
: only some of the concept that i've still unclear with.

The Members!

Hi, hi, hi.... The Awesome F.A.S.H. is here in the blog!
The Awesome F.A.S.H. members:
1.Nur Fatin Nazifah binti Nazri
2.Nurul Asmidah binti Md Latiff
3.Nurul Syafiqah binti Azhar
4.Nur Haida binti Che Mat Ariffin..