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Because a certain percentage of people (i.e. the top 5% or so) need to be kept at an A* percentile, then the next 10% or so of the population at an A. Basically, it is to keep the grading system fair and in balance, they don't want too many people on A*, but equally, they will raise the boundary if lots of people score low. It simply depends on how hard the test is.
What else can I help you with?
Describe how the chemical energy in porridge is converted to the gravitational potential energy in the lifted bar?
When consuming porridge, the chemical energy is converted into kinetic energy within the muscle cells through cellular respiration. As the person lifts the bar, their muscles contract, converting the kinetic energy to mechanical work against the force of gravity. This work done by the muscles results in an increase in the potential energy of the bar as it is lifted.
What should scientists do if new evidence was found which didnt relate the big bang theory?
Scientists should carefully analyze the new evidence and conduct further research to understand its implications. They should evaluate whether this evidence challenges the current understanding of the Big Bang theory or if it can be integrated into the theory with modifications. Open-mindedness, critical thinking, and rigorous testing are essential in assessing the impact of new evidence on scientific theories.
What happens to the steam after it has been used in a coal or oil-fired power station?
Once the steam has been used to turn the turbines it is then cooled by pipes containing cool water, from somewhere else, as they pass through the steam. Then the steam (which is now water after being cooled) returns back to the boiler to be turned into steam again, so it can begin the whole process again. Different water cannot replace the used steam, it has to be condensed back to water, because only purified water can be used to turn the turbines, and it is too expensive to keep purifying more and more water. The steam has to be cooled and returned to water somewhere away from the turbines, as even one droplet of water could damage them, due to their fast movement and delicacy, despite being big. If you got this question from the AQA GCSE science text book (where i got it from!) then the diagram (on page 266) is helpful, but not that detailed.
Grade boundaries in biology aqa gcse higher tier core science?
The grade boundaries for AQA GCSE Higher Tier Core Science vary each year and are not pre-determined. They are set after all the papers have been marked, taking into consideration the overall performance of students. You can find the grade boundaries on the AQA website once they are released.
When do AQA and Edexcel release grade boundaries for summer 2012 exams with the results day on 23rd August?
I don't know for sure, but people say Edexcel IGCSE grade boundaries for May 2012 series is being released on August 22nd .
What does AQA stand for?
AQA stands for Assessment and Qualifications Alliance in many universities and science communities. In business in stands for Analytical Quality Assurance, and in education it can stand for Any Question Answered.
What mark is required to get a C in foundation science?
Depends on the board AQA is between 24-32
Is the Edexcel GCSE Science course or AQA GCSE course more similar to the OCR National Science course?
edexel course is more similar :)
What is Aqa Baqer's population?
The population of Aqa Baqer is 1,266.
What is Dami Aqa's population?
Dami Aqa's population is 107.
What is the population of Aqa Mohammad?
Aqa Mohammad's population is 52.
When did Arghun Aqa die?
Arghun Aqa died in 1278.
What is the population of Borj-e Aqa?
As of 2021, the population of Borj-e Aqa is approximately 2,500.
What is Hajjiabad-e Aqa's population?
Hajjiabad-e Aqa's population is 291.
What is the population of Aqa Baba Shiravand?
The population of Aqa Baba Shiravand is 624.
