Q&A - P3 Science

[Nebbermind]

Just4Good:

Please help to advice .. is paperclip a system ? How about plastic bag ? Thanks.

I would have thought that a system compises of different things. These 2 donch look like system to me. But I am only guessing!!

[24by7_mum]

A system is made up of different parts that work together to perform a task. e.g. torch, handphone, bicycle.


Don’t think paper clip or plastic bag is a system.

[jedamum]

24by7_mum:

A system is made up of different parts that work together to perform a task. e.g. torch, handphone, bicycle.


Don't think paper clip or plastic bag is a system.

so a paper clip with a decorative flower ornament is not a system?

[24by7_mum]

if the paper clip is one of the parts that made up something … that ‘something’ would be a system not the paper clip … I hope I am right.


e.g a mechanical paper is made up of a different parts e.g. pencil lead, spring, plastic cap, plastic body part. these are parts of the systems that can be assembled to form a mechanical pencil (a non-living system) and this system is used to perform a task (write)

[24by7_mum]

sorry … the example should be mechanical pencil not paper … typed too fast.

[Just4Good]

24by7_mum:

A system is made up of different parts that work together to perform a task. e.g. torch, handphone, bicycle.


Don't think paper clip or plastic bag is a system.

FT said both are systems .. but model answer from assessment book states these are not. So if exam has such questions, who should I follow ? :?

[Nebbermind]

then I think must refer back to the science text and see how a system is defined.


is this in p3 science?

[24by7_mum]

if FT says both are systems; I guess it’s better to understand from the teacher why it is so.

[Just4Good]

24by7_mum:

if FT says both are systems; I guess it's better to understand from the teacher why it is so.

According to FT, plastic bag has 2 parts.. one is compartment & the other is handle.
For paper clip, we need 2 ends to clip a paper.

I thought for it to be called a system, we need at least 2 different ( physical ) parts .
:?

[bebebub]

Can someone kindly help me with this question on Material:

Ships are made of heavy metals such as steel. Explain why they are able to float. TIA