Q&A - PSLE Science
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Another question:-
Which one of the following statement is correct?
A) all energy on earth is created by the sun
B) potential energy in fossil fuel originates from sun
C) solar energy only refers to light energy from the sun
D) all life depends directly or indirectly on the sun’s light energy only.
TIA -
isetan:
Hi, just to check can FUEL come in 3 states of gas, solid and liquid? This question was asked in DD school practice paper.
Yes
Gas - E.g. natural gas, methane...
Liquid - E.g. petrol, diesel ...
Solid - E.g. Coal, wood... -
isetan:
A) all energy on earth is created by the sun (wrong)Another question:-
Which one of the following statement is correct?
A) all energy on earth is created by the sun
B) potential energy in fossil fuel originates from sun
C) solar energy only refers to light energy from the sun
D) all life depends directly or indirectly on the sun's light energy only.
TIA
Most energy on Earth is converted from energy from the sun and not created by the sun.
B) potential energy in fossil fuel originates from sun (correct)
Fossil fuel is created when dead organism are buried underground over a long period of time without sufficient oxygen for proper decomposition to take placer. The energy in this dead organism (which is converted to energy in the fuel) is converted from light energy of the sun through photosynthesis.
C) solar energy only refers to light energy from the sun (wrong)
Other components of Solar energy are heat and radiation
D) all life depends directly or indirectly on the sun's light energy only. (wrong)
Light energy is only one of the factors needed for survival. Other factors are oxygen, water .... -
Hi atutor 2001,
many thanks! -
Hi! I hv one qn.
Jason’s grandfather has black eyes and his dad has brown eyes.
Jason’s has black eyes.
Why does jason have blavk eyes although his parents have brown eyes? -
Herbie:
Inherit from grandfather of courseHi! I hv one qn.
Jason's grandfather has black eyes and his dad has brown eyes.
Jason's has black eyes.
Why does jason have blavk eyes although his parents have brown eyes? -
Hi
Any tips to share how to do well for Section A MCQ as this is 60% of the whole paper?
Tried the elimination method which does not seem too effective for dd…
Appreciate any thoughts…
Thanks. -
G Tan:
Yes. The students should have been taught that such inherited traits can 'skip a generation'.
Inherit from grandfather of courseHerbie:
Hi! I hv one qn.
Jason's grandfather has black eyes and his dad has brown eyes.
Jason's has black eyes.
Why does jason have blavk eyes although his parents have brown eyes? -
mrswongtuition:
Yes. The students should have been taught that such inherited traits can 'skip a generation'.[/quote]But i think the answer needs to be more scientific...
Inherit from grandfather of courseG Tan:
[quote=\"Herbie\"]Hi! I hv one qn.
Jason's grandfather has black eyes and his dad has brown eyes.
Jason's has black eyes.
Why does jason have blavk eyes although his parents have brown eyes? -
Hi
Does anyone has this book for sale ?
Model Answers to Psle Examination Questions 2003-2007 Science by SAP
I tried to get it from popular bookstore but they only sell the current 2007-2011
http://books.google.com.sg/books?id=b5ecFr7Zq3QC&dq=%22SEAB%22&source=gbs_similarbooks
Thanks
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