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School Certificate Science MARATHON (2 Viewers)

supre

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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

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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?
 
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supre

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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

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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

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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

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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

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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

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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

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Outline the steps in the human reproductive system that result in the formation of an embryo.
 

muzeikchun852

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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.
 
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muzeikchun852

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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?
 

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