Science Ideas in Context June 2009

[MusLiM 4 LiFe]

:sl:

Is anyone doing GCSE 21st Century Science or Additional Science?

We've just got our Ideas in context paper to prepare and read through for the exam in June.

Im just wondering if anyone has thought of any predicted questions that may come up?

Would be extremely helpful.

Jazakallah Khair.

:w:

[MusLiM 4 LiFe]

63 views and not one reply?

nice to know people are being helpful :|

[Al-Hanbali]

^ Which board is it ?

[MusLiM 4 LiFe]

ocr 21st century

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[Saad Wakeel]

I have all the relevant workshhets,
which were provided by my school,
for both core and additional science
if you can tell me your email i will send them all to you on some of the questions you will find the answers written on the worksheet.

Saad Wakeel

[Saad Wakeel]

if there is another way to get these worksheets to you i will try my best inshallah
because i am new to this forum i am not sure how to use it to it;s full extent

[MusLiM 4 LiFe]

will you be able to type it out on here?

[Saad Wakeel]

I will type them up on the forum for you by Tuesday evening , Wednesday evening max

[Saad Wakeel]

Core Science
Topic 1 - Homeopathy
1)What is homeopathy
2)What does controversial mean
3)What do homeopathic doctors mean when they say that the medicine treats "like with like"
4)What does diluted mean
5)Whay are homeopathich substances diluted
6)With what two substances are homepathic medicines diluted with
7)What do homeopathich doctorssay will happen when you first start the treatment
8)From the table how many molecules of the homeopathich substance are present in 1cm cubed before dilution
9)How many times is the original solution diluted by 100 before the medicine is prepared
10)How many molecules of the homeopathic substance are left present in 1cm cubed of medicine after dilution
11)What do homeopathic doctors do to the solution every time the substance is diluted
12)What do homeopathic doctors say this shaking helps to do
13)For whom do homeopathic doctors consider their medicines safe
14)What do homeopathic doctors say their medicines do to the "vital forces" in th body
15)How do homeopathich doctors explain how their medicine works
16)How do homeopathich doctors explain that their treatment restorest their health
17)In the survey,how many people said that homeopathy had helped with their illness
18)Who are conventional doctors
19)What do conventional doctors say about the scientific evidence to support homeopathy
20)What reason do conventional doctors give for their being no scientific evidence to support homeopathy
21)Why do conventiuonal doctors think that some patients may see the benifits with homeopathic treatments
22)What is a "placebo"
23)What is a "placebo effect"
24)Give another way that conventional doctors think patients may see improvements when they take homeopathic treatments
25)Why do conventional doctors say that seriously ill patients are given false hope by homeopathic treatments
26)What happens to all contventional medicines before they can be prescribed
27)Explain the idea of "peer review"
28)Wher do scientists publish their work
29)Why do othe scientists need to replicate the first scientists work
30)DO you agree with homeopathich medicines
31)Who does jane agree with: homeopathic doctors,conventional doctors or both/neither
32)Who does ranjit agree with: homeopathic doctors,conventional doctors or both/neither
33)Who does peter agree with: homeopathic doctors,conventional doctors or both/neither
34)Who does stella agree with: homeopathic doctors,conventional doctors or both/neither
35)What are the three types of clinical trials in which doctors test drugs
36)Explain how an open drug trial works
37)Explain how a blind drug trial works
38)Explain how a double blind drug trial works
39)What precautions may scientists take to ensure the safety of patients whilst they are on drug trials
40)How do scientists ensure ther is no bias in the results
41)What is you immune system
42)How does your immuns sustem fight a disease or infection

Tell me if you need any help or answers to these questions and i will tell you i'll post the next topic ASAP

[MusLiM 4 LiFe]

Jazakallah bro :)

[Saad Wakeel]

Core Science
Topic 2 Carbon monoxide
1)Describe some of the properties of carbon monoxide
2)What is the chemical formula for carbon monoxide
3)What is the lowest concentration of carbon monoxide (in ppm) that can cause death
4)Explain how carbon monoxide poisons your body
5)Using the table,what is the conclusion linking carbon monoxide concentration and maximum exposure time
6)What is the main source of carbon monoxide pollution
7)What two products are formed in car and lorry engines when incomplete combustion takes place
8)What two products are formed when fuels burn completley (with enough oxeygen)
9)How much oxeygen is present when incomplete combustion takes place
10)What happens to the carbon monoxide that is released
11)Write out a word formula equation for this reaction
12)Why can carbon monoxide reach dangerous levels in cities
13)Give two ways that cities have tried to reduce their carbon monoxide pollution levels
14)GIve another major sourde of cartbon monoxide
15)What is a solid fuel
16)Give two ways that coal is used
17)What has been happening to the annual (per year) emissions of carbon monoxide since the 1970's
18)What has steadily been increasing over time
19)What can a catalyic converter do to carbon monoxide levels produced by cars and lorries
20)What is the EU
21)Why have all cars sold in the EU been fitted with catalyic converters since 1993
22)Write out a word equation for the reaction in a catalyic converter
23)Write out a formula equation for the reaction in a catalyic converter
24)Draw this equation out in a circle atom form
25)Why is the overall proportion of cars fitted with catalyic converters increasing
26)What has been suggested to further reduce carbon monoxide levels
27)When and why are theses electric cars charged up
28)What are coal, oil and natural gas known as
29)Why have many homes and power stations started burning oil and gas rather than solid fuels ,such as coal duriong the past 40 years
30)What happens when household appliances such as heaters are not serviced regularly
31)HWat is an enclosed space
32)What can happen to the carbon monoxide levelswhen a heater is used in a bedroom or a kitchen
33)How much carbon monoxide is produced when applianced are serviced regularly
34)What is the name for this type of combustion
35)What can be in poor supply when appliances are not serviced regularly
36)What is the name for this type of combustion
37What does "lethal" mean

[Saad Wakeel]

Topic 3 Microwave radiation
1)What uses microwave radiation
2)Draw out a list of the parts of the electromagnetic spectrum in order
3)At what power (in watts) does a mobile phone mast transmit
4)At what power (inwatts) does a mobile phone transmit
5)At what power (in watts) do the more powerful WIFI networks operate
6)What does ALARA stand for
7)How are the mobile phone comapnies and WIFI network operators following ALARA
8)Why are parents and teachers forcing some schools to switch of their WIFI networks
9)What symptoms are many parents and some scientists worried the microwave radiation emitted may cause
10)Why might sciientific evidence not be conclusive yet
11)Why might children be at more risk than adults
12)Was the eidence from the one teacher mentioned in the article conclusive
13)On what principle was the head teacher of the school concerned operating when (s)he had the WIFI network switched of
14)Explain the precautionary principle
15)Who wrote extract 1 and where was it published
16)Why might you place more confidence in the conclusions of this particular study
17)Over what period of time was the study taken
18)What happens to some peole whn thy know they are exposed to radio waves
19)Could these people tell when the radio waves were turned on and of
20)Why does the article say these people are not radio sensitive
21)What percentage of the poulation say they get symptoms when exposed to these new technologies
22)What is a "double blind trials"
23)What was found in the double blind trial when the signals were turned on and of
24)Did the blind trial support the existence of radiosensitivity
25)What happened when the group was told the the signals wer turned on
26)What should the radio sensitive people have been to do when the double blind trial was being run
27)What does the word correlation mean
28)What was there no correlation between
29)Summarisethe findings of the study
30)Who funded the study
31)Could ther have been any bias in the study

[Saad Wakeel]

Additional Science Topic 1


1. What is meant by the term homeostasis? (2 mark)

2. What factors affect the production of urine in the body? (5 mark)

3. What substance will not be found in the urine of a healthy person? (1 mark)

4. What advice is given to dialysis patients? (2 mark)

5. What molecules can pass through the partially permeable membrane of the dialysis machine? (3 mark)

6. Why do red bloods remain in the patient’s blood during dialysis? (2 mark)

7. Why does the dialysis fluid flow in the opposite direction to the patient’s blood? (2mark)

8. Why is it important to keep the concentration of urea low in the dialysis fluid by constantly replacing it? (2 mark)

9. How many people in the UK population develop chronic kidney failure? (1 mark)

10. What scientific word is used to describe the movement of water molecules from area of high concentration to area of low concentration? (1 mark)



11. What hormone affects the production of urine? (1 mark)

12. Where is this hormone produced in the brain? (1 mark)

13. How does alcohol affect the production of urine? (2 mark)

14. What conditions might cause a person’s urine to be a) more concentrated b) more dilute.

15. What is the longest length of time a person may need to be attached to a dialysis machine in a week?

16. Proteins cannot pass through a partially permeable membrane, suggest why!

17. What does partially permeable mean?

18. Describe the affects of alcohol on the production of urine. Ensure you name the hormone responsible for controlling urine production in your answer.

19. Name two other things that are kept constant in the body via homeostasis.

20. Define reabsorption.

[Saad Wakeel]

Additional Science topic 2

The following words are continued throughput the passage. Give a definition for each word below.
acid
pH
alkaline
neutralise
antacid
compounds
reactions
carbonates
concentrations
ions
insoluble
soluble













2. What can be the result of having too much acid in the body?


3. What can happen as a result of having too much stomach acid?


4. What can happen as a result of having too much acid in our muscles?


5. What can happen if you have too much acid in the blood?


6. What two elements does a carbonate contain?


7. Looking at the table of results answer the following:

(a) What variable was being investigated?
(b) What variables were kept the same?


(c) Do the results show a pattern? Explain.


(d) Are the results precise?


(e) Are the results reliable? Explain.


(f) Explain why there may have been a slight change in temperature?


(g) What conclusion could you draw from the results? (reference any results which support your conclusion)


(h) Are there any obvious anomalies?


(i) Suggest ways to make the results more precise?


(j) Suggest ways to make the results more accurate?


8. Is it good to take tablets to neutralise stomach acid that are insoluble? Explain.


9. What are the side effects of insoluble neutralising stomach acid tablets?


10. What gas is made as result of taking insoluble neutralising stomach acid tablets?


11. What side effects of soluble neutralising stomach acid tablets?


12. What are the products of mixing an acid and an alkali together?


13. Which acid neutralising stomach acid tablet would you recommend? Explain.

[Saad Wakeel]

Additional Science topic 3

1. What happens when white light passes through a prism?




2. Why did the Royal Society publish Isaac Newton’s letter after he found out that light separated into different colours?



3. Why did Newton suggest that light was made of particles?



4. Christiaan Huygens established a wave theory of light in 1690. Why do you think that he waited until 1690 before he published his theory?



5. What was the advantage of Christiaan Huygens wave theory over Newton’s particle theory?




6. List the similarities and differences between TRANSVERSE and LONGITUDINAL waves.
(Draw diagrams if it helps you to communicate your ideas)






7. Why did Thomas Young carry out many experiments on light? What did he discover?




8. What is the speed of light in a vacuum, in m/s and km/s?




9. James Clerk Maxwell calculated the speed of electromagnetic waves. What did he find out? What important conclusion did he state?




10. Heinrich Hertz supported Maxwell’s conclusion by carrying out experiments. Why is it important for other scientists to agree and arrive at the same conclusions?




11. Max Planck said that electromagnetic radiation arrives in small packets of energy. What are they called?



12. Planck also said that light behaved like waves and particles at the same time. What did this lead to?




13. What did Albert Einstein discover about electromagnetic waves traveling through a vacuum?




14. Why are all the Scientists in the time-line men?

[Yanal]

Nice amount of help,JazakAllah Khayr Akhee,btw I do not like science...

[Nσσя'υℓ Jαииαн]

Mmm nice questions. I like science :D

[khank003]

these notes are very helpful, but where do i get the answers from?

jazakhallah

Kinza

[khank003]

these notes are very helpful, but where do i get the answers from?

jazakhallah

Kinza

pleasee, guys please help quickly, my ideas in context is in 2 days, n im doing additional! thankssss....

my addie is: kkhan_93@hotmail.com... can u send me the answers asap! thank yooou!

[khank003]

help sister!!

[Nσσя'υℓ Jαииαн]

Oh boy I didnt know u wanted answers lol. Let me see if I can help InshAllah. But Im not sure which ones u want answered.

[khank003]

lol.. thank you... no problem if u cant... but if possible with the additional science questions biology, chemistry and physic.. but no problems if u cant! honestly,thank you anyway :D

[Nσσя'υℓ Jαииαн]

what do u mean additional lol. Set of questions u mean??

[khank003]

awww no problem... if i have any problems ill just email the teacher, so dont worry, thank you soo much neway for all ur effort.. i really appreciate it


jazakhallah!!

[Nσσя'υℓ Jαииαн]

lol inshallah.

wa iyaak(i).

[khank003]

yep, da questions dat anova brother put up on additional science questions... i wasnt sure about the answers, but dun worry, i shud be ok for 2mrw inshallah :D

[Evie]

where can i get the answers to the additional ??

[MusLiM 4 LiFe]

i had my exam today, and alhamdulilah it went well :)
jazakallah for the questions bro

[Zappy]

What are the answers to the questions on homepathy, carbon monoxide and wireless network

[amirah-muslimah]

salam
can someone who has the ansers to most of saeed wakeels ansers
please email me on ladypinky99@hotmail.co.uk
im findin this difficult
but inshallah with the help of allah
we will pass

[amirah-muslimah]

the sister who had her exam
what quuestion came up
email me

jazakhallah
xx

[Tahmina]

what is the answer for question 4 in the homeopathy article?

[Tahmina]

what is the answer to Q5,11,12,14 20,23, 36,36 37.98,39,1o

[sammoss147]

Thank you.


That really helped....


Science exam in 50 mins.... Ahhh!!!


:w:

[Tahmina]

i had my examz today is went really well
those questions really helped
ta:thumbs_up

[czgibson]

Greetings,

For anyone asking for answers, now and in the future:





LOOK THEM UP





You'll remember them better if you do the work. :rollseyes

Peace

[Nσσя'υℓ Jαииαн]

^^Yea cuz you end up reading it several times in different ways and through the process you'll learn something else...maybe even helping you understand better.

[MusLiM 4 LiFe]

I had my science yesterday and i found it so hard :S
additional science was okay but core science was hard.