Q&A - P5 Science

[clar808]

Can tell me why dogs hang out their tongues on hot days? This is my son SA1 examination question where many students can't answer. Plse help. Thanks

To accelerate heat loss?

[clar808]

hi i am a student and i would really appreciate if u would help me with the question.


Which of the following blood vessels have very thin walls?
(1) Veins
(2) Arteries
(3) Capillaries
(4) Veins and arteries

[HAPPYH]

clar808:

hi i am a student and i would really appreciate if u would help me with the question.


Which of the following blood vessels have very thin walls?
(1) Veins
(2) Arteries
(3) Capillaries
(4) Veins and arteries

(3) Capillaries

[NerdyMath]

Bala said that the amount of chemical potential energy is lower in blood flowing through the blood vessels in the small intestines than the blood flowing through the blood vessel in the lungs.

Do you agree with Bala? Give a reason for your answer.

My son is having trouble with the question above as he had not learnt what is chemical potential energy. Please help my son, thanks in advance!

[magicpiglet]

Wah 1st time heard of question with chemical potential energy in blood. Anyway wat I think ( may not be correct) is blood flowing through intestine has higher chemical potential energy den in lungs as food is fully digested in small intestine before passing through via blood, good if others can help

[janice_0950]

Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Question.21
http://s256.photobucket.com/user/disneyterris/media/2_edit4ed.jpg.html
(answer sheet: No.3)

Question.34 a & b
http://s256.photobucket.com/user/disneyterris/media/3_edited-1.jpg.html

(answer sheet 34b):1 sibling


Thank you in advance!

[jojoberry]

janice_0950:

Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Seeds cannot move! so No 3 cannot be the answer. Should be \"Shoots\" grow towards sunlight.

[jojoberry]

janice_0950:

Question.21
http://s256.photobucket.com/user/disneyterris/media/2_edit4ed.jpg.html
(answer sheet: No.3)
Thank you in advance!

Both circuits will receive more power so bulbs in both circuits will become brighter.

If the question asks to compare between X and Y - then bulbs in Circuit Y will be as bright as that in Circuit X (but this is not the question in this case)

[jojoberry]

janice_0950:

Question.34 a & b

http://s256.photobucket.com/user/disneyterris/media/3_edited-1.jpg.html

(answer sheet 34b):1 sibling


Thank you in advance!

You need to look at those directly connected to Cindy's father. There was only 1 circle directly connected at the same level - so he has a sister. The square next to the sister is her husband. So only 1 sibling.

[janice_0950]

jojoberry:

janice_0950:

Dear Science Expert,

please help.......... sob! sob! sob!


Test papper
Question.10
http://s256.photobucket.com/user/disneyterris/media/1_edited-1.jpg.html
(answer sheet: No.2)

Seeds cannot move! so No 3 cannot be the answer. Should be \"Shoots\" grow towards sunlight.

jojoberry,

Thank you for answered above 3 questions.

Question. 10
However, I would like to ask this question why option 2 is the correct answer?

Thank you in advance!