SC Science 2011 MARATHON (2 Viewers)

[RealiseNothing]

Yep, they need long necks for fetching vegetation, therefore they bred long necked giraffes.

State the 3 main chemical equations.

Do you mean chemical reactions as in:

acid + base = salt + water

acid + metal = salt + hydrogen

acid + carbonate = salt + water + carbon dioxide

 

[lath]

Yep, they need long necks for fetching vegetation, therefore they bred long necked giraffes.

State the 3 main chemical equations.

could you clarify what you mean by chemical equation? Do you mean like the ionic, word and formula equations?

 

[starryblue]

Would an example for this explanation be like giraffes?
They needed longer necks to reach for the food in the trees so this was a favourable characteristic which would allow them to adapt in their environment and hence survive. That's why the characteristic of long necks was passed down until even the Modern giraffes?

No~ finches would be a better example since the question is to describe Darwin's contribution. giraffe is an example for Larmack's theory of evolution

 

[lath]

Do you mean chemical reactions as in:

acid + base = salt + water

acid + metal = salt + hydrogen

acid + carbonate = salt + water + carbon dioxide

Even if it did mean reactions, it would be really ambiguous

 

[RivalryofTroll]

No~ finches would be a better example since the question is to describe Darwin's contribution. giraffe is an example for Larmack's theory of evolution

It can be applied to both theories.

 

[starryblue]

Even if it did mean reactions, it would be really ambiguous

exactly what i was thinking

 

[RealiseNothing]

Even if it did mean reactions, it would be really ambiguous

The 3 I posted are the 3 main acid + ??? reactions. I assumed he meant those as I can't think of what else would be considered the "main 3".

 

[starryblue]

It can be applied to both theories.

i guess so

 

[starryblue]

The 3 I posted are the 3 main acid + ??? reactions. I assumed he meant those as I can't think of what else would be considered the "main 3".

i reckon 'main reactions' is too broad...chemical reactions can refer to decomposition, neutralisation, etc, etc. define 'main'.

 

[Magical Kebab]

Do you mean chemical reactions as in:

acid + base = salt + water

acid + metal = salt + hydrogen

acid + carbonate = salt + water + carbon dioxide

Yep ur right, reactions sorry..

 

[lath]

Provide evidence for evolution.

 

[Magical Kebab]

Provide evidence for evolution.

Darwins Natural selection theory.

On a graph, where would you put the dependent and independent variables (x or y axis)

 

[lath]

Darwins Natural selection theory.

On a graph, where would you put the dependent and independent variables (x or y axis)

independent on x axis

 

[lath]

what is meant by the frequency of a wave?

 

[RivalryofTroll]

what is meant by the frequency of a wave?

Number of waves that pass a fixed point in 1 second?

 

[zombies]

what is meant by the frequency of a wave?

the number of waves that pass a given point in a second

edit: haha Rivalry you beat me to it


oh I have a question: explain how a fossil is formed

 

[girlworld_club]

For a plant or animal to become a fossil, a series of events must occur. The remains have to be buried before they completely decompose or are eaten. The conditions of burial must then be suitable for the remains to leave an impression or have their organic material replaced by minerals. Finally, the fossils must survive millions of years of pressure, uplift and erosion if they are to come back to the surface.

 

[RANK 1]

So heres how it works - i ask a question, then someone answers it and asks another question.

.

 

[girlworld_club]

what is the effect of carbon dioxide on rising sea levels?

 

[RANK 1]

it promotes global warming by trapping the heat, hence increasing rate of ice caps melting hence rising sea levels.

next question, explain pi and sigma bonds and their relative strengths