Tutor Niedino: Pri Science Questions and Concepts

[Faun]

Looking forward to your website. Thanks!

[snowman.022851697]

Thanks for the tips niedino ((:

[kancheongmum]

Hi Niedino


Need confirmation on the following

A metal cup and a plastic cup both contain hot water of the same temperature. After 15 mins the water in which cup will have a higher temperature. Answer: water in the plastic cup Reason: metal is a better conductor of heat than plastic, so heat is conducted away faster.

What if the water is changed into cold water?
After 15 mins the water in which cup will have a lower temperature.
Answer: water in the plastic cup. Reason: metal is a better conductor of heat so it gain heat faster from the surrounding.

Thank you

[rkumar]

Correct on both accounts.

[rkumar]

Oops sorry, didn’t realise it was a private thread. please disregard previous post.

[singapore45]

kancheongmum:

Hi Niedino


Need confirmation on the following

A metal cup and a plastic cup both contain hot water of the same temperature. After 15 mins the water in which cup will have a higher temperature. Answer: water in the plastic cup Reason: metal is a better conductor of heat than plastic, so heat is conducted away faster.

What if the water is changed into cold water?
After 15 mins the water in which cup will have a lower temperature.
Answer: water in the plastic cup. Reason: metal is a better conductor of heat so it gain heat faster from the surrounding.

Thank you

Hi Niedino,

Could you provide the answer for this as I am a little confused about it as well. What should the proper phrasing be?

[rkumar]

kancheongmum:

Hi Niedino


Need confirmation on the following

A metal cup and a plastic cup both contain hot water of the same temperature. After 15 mins the water in which cup will have a higher temperature. Answer: water in the plastic cup Reason: metal is a better conductor of heat than plastic, so heat is conducted away faster.

What if the water is changed into cold water?
After 15 mins the water in which cup will have a lower temperature.
Answer: water in the plastic cup. Reason: metal is a better conductor of heat so it gain heat faster from the surrounding.

Thank you

Hi Niedino

Correct me if i am wrong but i think the reason for Q1 \"metal is a better conductor of heat than plastic, so heat is conducted away faster.\"
should be Metal is a poor insulator of heat so heat is lost to the surrounding faster

[lemofish]

Hi Niedino,


Can you recommend any good science revision and reference books available at Popular? My son is in P3. TIA.

[HaleyCopterz]

rkumar:

kancheongmum:

Hi Niedino


Need confirmation on the following

A metal cup and a plastic cup both contain hot water of the same temperature. After 15 mins the water in which cup will have a higher temperature. Answer: water in the plastic cup Reason: metal is a better conductor of heat than plastic, so heat is conducted away faster.

What if the water is changed into cold water?
After 15 mins the water in which cup will have a lower temperature.
Answer: water in the plastic cup. Reason: metal is a better conductor of heat so it gain heat faster from the surrounding.

Thank you

Hi Niedino

Correct me if i am wrong but i think the reason for Q1 \"metal is a better conductor of heat than plastic, so heat is conducted away faster.\"
should be Metal is a poor insulator of heat so heat is lost to the surrounding faster

Hi,

We do not say that a material is an 'insulator of heat' that would be marked wrong. Nothing is an insulator of heat as everything can conduct heat to a certain degree. So we should say that metal is a better conductor of heat than plastic. If a material is a better conductor of heat, that means heat travels through that material very quickly.

[BigDad]

HaleyCopterz:

rkumar:

[quote=\"kancheongmum\"]Hi Niedino


Need confirmation on the following

A metal cup and a plastic cup both contain hot water of the same temperature. After 15 mins the water in which cup will have a higher temperature. Answer: water in the plastic cup Reason: metal is a better conductor of heat than plastic, so heat is conducted away faster.

What if the water is changed into cold water?
After 15 mins the water in which cup will have a lower temperature.
Answer: water in the plastic cup. Reason: metal is a better conductor of heat so it gain heat faster from the surrounding.

Thank you

Hi Niedino

Correct me if i am wrong but i think the reason for Q1 \"metal is a better conductor of heat than plastic, so heat is conducted away faster.\"
should be Metal is a poor insulator of heat so heat is lost to the surrounding faster

Hi,

We do not say that a material is an 'insulator of heat' that would be marked wrong. Nothing is an insulator of heat as everything can conduct heat to a certain degree. So we should say that metal is a better conductor of heat than plastic. If a material is a better conductor of heat, that means heat travels through that material very quickly.[/quote]Hi HaleyCopterz,

So that means we cannot use the word 'insulator of heat'? :?