School Certificate Science MARATHON (3 Viewers)

supre

Member
Joined
Jun 11, 2009
Messages
155
Gender
Female
HSC
2011
What is the difference between genotype and phenotype?
genotype is a persons genetic coding
phenotype is how living things appear and function

My turn
how is electromagnetic radiation used in every day life?
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
genotype is a persons genetic coding
phenotype is how living things appear and function

My turn
how is electromagnetic radiation used in every day life?
gamma ray - produce image in medical diagnosis..
irradiate food to prevent spoilage.

name the level of earth's interior. where does convection current occur?
 
Last edited:

supre

Member
Joined
Jun 11, 2009
Messages
155
Gender
Female
HSC
2011
name the level of the earth's interior.
i am not too sure but i think it may be mantle. Convection currents occur in the asthenosphere

My turn
what are some effects that humans can have on the ecosystem?
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
i am not too sure but i think it may be mantle. Convection currents occur in the asthenosphere

My turn
what are some effects that humans can have on the ecosystem?
level would be: lithosphere, mantle, outer core, innter core. convection currents occur in the mantle.

ur answer would be pollute from manufactuor and cars - create acid rain.

my question: properties of precipitation.
 

bachviete

Member
Joined
Oct 24, 2009
Messages
53
Gender
Undisclosed
HSC
N/A
What is the shortest time anything can happen in the universe?
This is the Planck time, its the smallest time which we can talk about physics in a meaningful manor. It is about 10-18 seconds.
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
This is the Planck time, its the smallest time which we can talk about physics in a meaningful manor. It is about 10-18 seconds.
is it in the stage 5 course?
i had never learn that!:mad1::mad1:
 

HiHaii

Member
Joined
Aug 16, 2009
Messages
63
Location
Campsie
Gender
Male
HSC
2011
This could be in the SC...

Name an Australian Scientist and outline their contributions to science and/or their discoveries. What is significant about them?

Are there any Australian scientist that's easy to study and remember? I remember I didn't do well in this question because my scientist was crap.
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
This could be in the SC...

Name an Australian Scientist and outline their contributions to science and/or their discoveries. What is significant about them?

Are there any Australian scientist that's easy to study and remember? I remember I didn't do well in this question because my scientist was crap.
fiona wood! easy one!
 

lychnobity

Active Member
Joined
Mar 9, 2008
Messages
1,292
Gender
Undisclosed
HSC
2009
Outline the steps in the human reproductive system that result in the formation of an embryo.
 

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
Outline the steps in the human reproductive system that result in the formation of an embryo.
copulation - sperm joins the egg through sexual intercourse
semen is pushed into the vagina - release several hundred million sperm
swim toward the fallopian tubes - others will die
one sperm enter the egg, the others die eventually - live for up to two days in the females body.
fertilisation - formation of the embryo

name the properties of precipitation.
 
Last edited:

muzeikchun852

Active Member
Joined
Mar 29, 2009
Messages
1,590
Gender
Undisclosed
HSC
2011
Two solutions mix and form a solid.

-

What was the width of the universe during the inflationary period?
havent learn that again.. =/ maybe i have miss some work on universe..
can anyone give me notes on universe or astrophysics?
 

Users Who Are Viewing This Thread (Users: 0, Guests: 3)

Top