Experimental Sciences
Discussion of Sports, Exercise & Health Science, Design Technology and advice on which science to take (if more than one science is asked about, ask here).
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378 topics in this forum
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Physics or Biology? 1 2
by gba- 27 replies
- 5.4k views
So I'm doing course selections and I'm not sure whether I should take SL Bio or Physics. I'm already taking HL Chem and I can only choose one other science. I've asked a lot of people but everyone just says "it depends on what you're going to do". The thing is, I have no clue. I'm considering med school, which would require bio, but it's equally likely I'll go into physical sciences. Here's my reasoning (pros for each): Bio -easier, I could focus on my other HL subjects, and my marks would look better applying to university -more people are taking bio, so there are more people I can discuss/work with; not many of my friends are taking physics Physics -harder, but I think…
Last reply by TurtleR, -
- 0 replies
- 2.8k views
Hello all! I'm around the time at my school where I should start writing my extended essay very soon. I was thinking of doing it about something with electricity, but when my physics teacher found out how much electronic stuff I do on my own time, he really believes that I should do something related to electronics. I'm not looking for specific topic suggestions in electronics. What I'm really asking is for a general idea of some of the types of things you could investigate with electronics, because I don't see any good types of things to do with electronics really. What do you guys think? Actually one thing that just popped into my head just as I was writing this was loo…
Last reply by The Fish, -
- 14 replies
- 7.8k views
I do not want to major in anthything related to science in the future. However, I am obliged to take one science. I want to know, Which one is easier, Physics SL or Chemistry SL? In order to recieve a 7 for SL Chemistry, You need 80+(aprox) For Physics, a 7 is 68+(Aprox) Logically, Physics seems easier. What are your opinions? Thank you!
Last reply by MR.AHM, -
- 2 replies
- 2.8k views
Is there anyone who actually choosed DT in group 4, and what's your DT major topic? i took transport design and almost finished the research.
Last reply by cosmo_gloria, -
- 7 replies
- 16.8k views
Hello, I was wondering if anyone knew the word limit (if there is one) for chemistry SL IAs. Mine both reached the 4000 word mark, and I'm wondering if I should be worried (both longer than my EE! lol). A classmate of mine even hit 6000 words on one of his.
Last reply by d3athlig3r, -
- 11 replies
- 2.1k views
I am currently an upcoming senior. I take physics and chemistry both at higher level. I am planning to finish all my IAs in the summer. I wonder how many lab reports do we have to do for any group 4 subjects . i.e. How many D, DCP and CE do we have to do respectively to fulfill IB requirments?
Last reply by Peanut Butter Jelly, -
- 2 replies
- 2.4k views
Hi guys, i would like to ask about error bars...which never fail to make my brain go error. Well, i'm doing my physics IA on bouncing and i got these data points: i intend to make a mass vs. change in momentum graph, i have calculated both absolute and relative uncertainty using error propagation rules. You may want to ignore the velocity in the image, it was just there to calculate things, but not included in the graph i'd like to make. But now.......how should i do the error bars? If i plot the data points, they will be linear. If i just took the absolute errors, the error bars are barely visible. if i took the relative errors, one error bar would be so huge while …
Last reply by alramsey, -
- 27 replies
- 11.5k views
Help, because I'm a full IB student, I can max take 2 sciences in IB. I really do want my options open considering I'm fairly good at science and have no idea what I want to do in the future.Basically I'll be taking one with Chem HL and probably Math HL and other courses in IB,( don't know if this info helps) and another one either in grade 10 or grade 11 summer school for the 20s. And by grade 12, I have a free block open up for the 30 level course. Anywayz I've learnded a portion of physics 20 in chem, don't know if it counts and a portion of bio in grade 10, so far the only difference I find is that the physics labs' marks r slight lower, but my overall marks r both ar…
Last reply by Rigel, -
- 6 replies
- 6.8k views
So apparently this is a new subject, I think? salivattack just sent me a syllabus for this subject - Sports, Exercise and Health Science - and it's apparently for first exams in May 09. That means I guess the first batch that will study it will be the ones just starting IB this year. I had a quick look at the syllabus...it looks pretty interesting. It's like a mixture of anatomy physiology with a bit of psychology thrown in. It's good for someone who wants to go into professional sports I guess. I know a friend of mine who's a professional squash player would love the chance to take this subject.
Last reply by ebsss :), -
Which was the hardest IB science class for you?
by Guest IMBATMAN- 14 replies
- 12.1k views
Just was wondering which do you think was the most challenging of the science classes offered. i personally think it is chem, but that just me. 1. IB Chemistry SL 2. IB Chemistry HL 3. IB Biology 4. IB Physics 5. IB Environmental Sciences 6. Others? Thanks!
Last reply by Jazmine, -
- 8 replies
- 1.6k views
Does anyone know if we need to have percent uncertainties in bio labs? I know we had to in chem, but I am not sure about bio.
Last reply by larry, -
- 8 replies
- 2.5k views
I want to take HL Biology and Chemistry, but as I'm not very good at math, I have to take math studies. I've heard that taking both of these at HL would be really difficult because I'm not great at math. I'd like to go to medical school, so I will need a science based undergrad. I am also planning on taking a Pre-cal course after graduation in order to be accepted into university. Has anyone done both sciences at HL with math studies? Wouldit be better to just do SL Chem and HL Bio, or even just one science course( I don't really like that option)? I am also concidering med school in England, so if that makes any difference... Thanks
Last reply by Drake Glau, -
- 4 replies
- 1.3k views
I just thought we could share useful websites that we have found. Here's one to start http://hartonlinebio.com Happy revising xxxxxxxxxxxxxxxxx
Last reply by sophie5678, -
- 8 replies
- 2.1k views
Hey guys - I'm just about to start the IB. For those of you who're taking both chem & bio, could you tell me which one take more effort? Should I do ChemHL&BioSL or Chem SL&BioHL? Sorry for the stupid questions...
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- 0 replies
- 844 views
I am soon to graduate, but I have deferred my Uni places, so for poops and laughs, I might do a Rugby line next year in Highschool(we do that thing here in Sweden). Of course I would have to do some classes, so I was thinking of picking up another language and doing self-taught Exercise and Health Sciences SL. But I cannot find any textbooks designed for the IB! Help.
Last reply by Connor, -
- 8 replies
- 4.3k views
Hi, I was wondering if anyone could share their thoughts on doing two HL sciences in IB. I plan on taking Bio HL and Chem HL and I know I can work hard enough to get the grades but I don't really know what to expect by doing both. Some people have told me its really hard and its got me somewhat worrying if I can do it or not. I'd really appreciate if you could share your insight into what to expect or any experiences. I'm currently choosing courses for IB because I'm in the last year of MYP and still a little bit confused as to what I want to do. Thanks
Last reply by dance_ova_IB, -
- 2 replies
- 1.2k views
Hi everyone Probably irrelevant, but I'm a bit confused. I'm doing HL Biology and HL Chemistry, and today when I was reviewing Topic 2 and Topic 12 (SL and HL of Atomic Theory, respectively), in my text book I came across "Higher Level" and "Extension". I'm in my last year of IB, and last year my chem teacher taught the HL Atomic Theory stuff to us cause it's pretty easy, but we only learnt "12.1.3-12.1.5" and I was searching for 12.1.1 and 12.1.2 and they're under "Extension". What is this? There's "Extension" for all the topics! Even the HL topics that we've covered and finished in class...there's "Extension" stuff that I haven't learnt! Is this not "AHL"? Why is i…
Last reply by Ilkana, -
- 2 replies
- 1.4k views
Hello, Does anybody know why scientists have used Carbon-12 as the standard for amu ? and why do they had stopped using Oxygen-16 and hydrogen-1? Thanks in advance inm
Last reply by Keel, -
Lab Report Can anyone please please give me any idea on how processing a lab on "EFFICIENCY" ?
by LaLaPalooza- 4 replies
- 1.2k views
You are to take a simple machine like a pulley or incline or some sort of moving toy and determine the efficiency of the machine as you vary some factor. This is a formal IB and will be marked according to the IB criteria. You must work alone on this lab to collect your data. Please do not forget the importance of collecting multiple sets of data, plotting some type of linear graph, and including error sources in your conclusion. can anyone please tell me how should i do my lab since I have no idea on how should i process my lab and what to do.... feel so ashamed thank you so much!
Last reply by LaLaPalooza, -
- 1 reply
- 1.4k views
I was wondering whether or not a data logging experiment is mandatory to submit in the IB since one of my teachers says yes and the other says no...
Last reply by Keel, -
- 3 replies
- 1.3k views
Hi guys, I was just wondering when to know when the data you have collected experimentally is normally distributed. Is there a method that exists, to show whether it is in Gaussian Distribution? EDIT: I have 4 groups , each with 5 trials -- if that helps at all In my IA i want to use the t-test, however the condition is that the data has to be normally distributed, soo I don't know where to go Thanks!
Last reply by kiwi.at.heart, -
- 11 replies
- 9.1k views
Hello, From your experiences may you give me some tips and advices in making the lab report.
Last reply by Drake Glau, -
- 1 reply
- 899 views
I've visited the 'how to make a perfect lab report' thread and the structure that was given for a lab report included having a research question in the very beginning. My question is could you give me an example of a Chemistry or Science research question. I don't know about how the question itself is structured to be honest and a general idea would be good, so that I can adapt it to my own lab report. Thanks for entertaining my stupidity. AK.
Last reply by fan, -
- 7 replies
- 9.6k views
As we all know, there are 3 types of error in the sciences: 1. Systematic error 2. Random error 3. Human error Where the third one is not an appropriate type of error to be discussed in the Conclusion&Evaluation part in lab reports. My question is what are the examples of human errors? I only know a few but I am not sure on that anymore because I forget For example, last week I did a Chemistry experiment. I understood the procedure wrongly and I repeated the experiment after my teacher explained to me what I was actually asked to do. This wasted my time and I ended up not finishing the experiment. So we will continue the experiment tomorrow (4 out of the 5 of us made…
Last reply by Keel, -
- 3 replies
- 1.8k views
Hello! So I am currently taking Chemistry and Physics SL, and we are almost finishing the core topics ; But I am having troubles with some information. My school has only one option of IB Programme, so my teachers told me that we would be studying "the options" for paper 3 this month. My chemistry teacher told me that in paper 3, you are given a 36 page exam which has all of the questions of all the options; but you could choose two of them which would correspond to those you studied in school (I know one of them is human biochemistry). But my physics teacher told me that paper 3 is a personalized exam, in which if you chose (of course I didn't chose them, my school did…
Last reply by dessskris, -
- 1 reply
- 1.6k views
What should I concentrate on while learning photosynthesis and cellular respiration - I've got about 12 hours left until school starts and I alsso have to write a lab report and an essay so I can't learn everything really
Last reply by Mahuta ♥, -
- 0 replies
- 794 views
Hey, Does anyone know whats an antenna complex? I mean - is it just an abstract term describing the particular arrangement of the pigments inside a photosystem or is it that photosystems are special kinds of antenna complexes or maybe it is the name for each pigment connected by a pigment-binding protein. I cant get that although, and I've been searching for some time now
Last reply by Hinuku, -
- 9 replies
- 1.9k views
I'm a bit lost when it comes to approaching my science subjects. Both of my teachers in Chemistry and Biology are ones that expect you to learn independently. This is especially hard in Chemistry since I'm almost completely new to it. Up to this point I've only barely been passing and I need to do something about it. Just need alot of recommendations in terms of a systematic process that'll help me learn the material properly that I can use for the next three terms of Ib. How to take/structure notes, how to practice etc. Be specific and Thanks!
Last reply by Mahuta ♥, -
- 38 replies
- 4.2k views
I'm looking for people who would like to join me, and compile notes based on syllabus... I'm sure it will help A LOT of people, so that we can all survive IB?
Last reply by timtamboy63, -
- 2 replies
- 2.4k views
Hello! I would like to share a framework for students that are writing labs. Find it useful or not, does not matter. I know for a fact that many struggle with these lab reports and this will help them. Table of Content Contents 1.1 – Aim of Experiment – Page 1.2 - Safety Precautions – Page 1.3 - Tools – Page 1.4 – Introduction – Page 2.1 – Hypothesis – Page 2.2 – Background – Page 2.3 – Variables – Page 3.1 – Method – Page 3.2 – Data collection – Page 3.3 – Data processing and presentation – Page 3.4 – Further Tables – Page 4.1 – Conclusion and Evaluation – Page 4.2 - Conclusion based on my hypothesis – Page 4.3 - Errors and limitations of the experiment – P…
Last reply by Bio_Kid18, -
- 21 replies
- 3.7k views
Soooooo, how about a thread about something that we like What are your favourite topics in the sciences that you do? Make sure you state if you're doing HL/SL. If it's an option, say so Mine are currently: Biology HL: Health and Physiology, Excretion and Genetics Chemistry SL: Periodicity, Acids and Bases. Maybe Organic Chemistry (we just started it)
Last reply by fan, -
- 6 replies
- 1.5k views
Can uncertainties (after a series of calculations) be high? And if can it reach 75%, even if the value is in %.
Last reply by ILM, -
- 5 replies
- 4.1k views
ok guys, here is the situation In our messed up school, you do all sl subjects in the first year and then at the start of the second year you choose which 3 hl subjects you want to do (except for maths hl lol which starts from the first year coz its so ****ing hard) anyway, I have to choose one hl and one sl between chemistry and physics the problem is that i really like chemistry and find it really easy however i have been warned by past students that the chemistry teacher is bad for hl content on the other hand, the thought of physics hl gives me a headache with all that relativity and quantum stuff even though the teacher is excellent Please Help !!!! which one is t…
Last reply by fan, -
- 3 replies
- 1.1k views
im doing chem SL and Bio HL and i really want to nail these two subjects...but i hate studying them especially bio because of all of the memorizing and i just do not understand chem...i honeslty feel like the idiot in the class each time i walk into a chem lesson....especially when it comes to organic chem...thats a killer for me. any advice on how to 'click' with these subjects and study them effectivley?!
Last reply by Jaymi, -
- 2 replies
- 6.4k views
I'm just wondering if its acceptable to draw your own graphs for a Lab Report, or does it need to be computer generated? If the 2nd one is the only option, where could I generate my graphs? All replies are welcomed!
Last reply by Drake Glau, -
- 7 replies
- 8k views
Hello fellow IB students! Excitement and anxiety are the air as Seniors (or equivalent) such as myself struggle with college applications. While filling out the online University of California Application I was intrigued to see that the IB test report section contains an Experiemental Sciences SL class called SL ASTRONOMY. As I want to major in Astrophysics in college, this put me on an investigation. I find no trace of the class on the internet, and little if nothing on IB Survival's forums. Can anyone help enlighten me? Assuming it exists I would like to know how someone could test out of this class, and where it is offered. If it does not exist, perhaps this could be …
Last reply by Center Field, -
Lab Report How is your internal assessment grade calculated? Does the group 4 project affect anything?
by meh- 8 replies
- 18.1k views
I'm in bio HL and I'm wondering about labs. I am getting the impression that not all of them get sent in to IB - does this mean that if I do really poorly on a few of them, it won't negatively affect my mark (unless my teacher, for some reason, sends it in)? If not all labs get used for my IB mark then how many does my teacher need to send in? Is it different for SL? I'm not very clear about this and I'm kind of worried that the bad labs I did at the beginning of last year are going to drag my mark down. Also I'm a little puzzled because I hadn't heard of the group 4 project until this year. Is it a major component of IB? Does it affect your internal assessment ma…
Last reply by Drake Glau, -
Past Papers
by etik8- 2 replies
- 1.1k views
Hi, do you know where I can find chemistry past papers? Thanks for help.
Last reply by etik8, -
- 7 replies
- 2.9k views
I'm looking for supplementary material for HL Biology and HL Chemistry. But, where I live, hardly any libraries stock IB textbooks, and if you want to purchase them, they need to be specially ordered :/ So, I'd love to hear your opinions on these books. Any sort of reviews/comments/whether it's worth getting them or not (as they're quite expensive)... I'd prefer a textbook with more than the minimum content on the syllabus rather than concise material, because I came in late to both courses, and missed about 4 topics... :/ Currently I have the Oxford textbooks (both the course companion and study guides) for both subjects. I find the Oxford texts a bit heavy, and because …
Last reply by IOwnAndPwnU, -
- 6 replies
- 1.1k views
Hi My plan is to get into a medical school preferably one in the US but I have a little dilemma. The problem is that the Universities requires at least a year with each of the science subjects but I can only choose two. I've already picked chemistry but i am stuck between Physics and Biology. Would be great with someone else's opinion. Thanks
Last reply by Sandwich, -
- 2 replies
- 1k views
Hey guy/girls, i need help for my d.t experiment!! can you please help, How can i test hardness of a bar of soap?? Any ideas??
Last reply by Sandwich, -
- 13 replies
- 7.9k views
So my teacher tells me that the lab reports they've sent in each year were always marked down. So how do I ensure really high marks on a lab report?
Last reply by Tilia, -
IB Biology or Chemistry?
by Guest rustynail- 10 replies
- 10.9k views
Hey guys, I'm starting my IB next year (!!) and our school's subject selections are due in really soon. I was just wondering whether any of you could give me any pointers or advice on whether I should do Chemistry or Biology (both will be at SL)... I don't actually want to study Science in my career, so it's really down to what's easiest. I'm quite good at Maths, which apparently Chemistry has quite a lot of, but I've also heard that Biology's easier in general. Any ideas? THANKS SO MUCH!
Last reply by Mahuta ♥, -
- 3 replies
- 1.3k views
Hey guys I am an IB student and really need help in doing my internal assessments, first of all if any past IB student for phy as HL and chem as sl looks at it and has really scored well in the lab reports please help me as in send me your lab reports at [email protected] as uploading at the site takes a big procedure and i cant even download from there also my TOK topic is " there is no absolute distinction between what is true and what is false " , so if anyone writing on the same could help me or a TOK professional looking at me please suggest me on the topic as i am really slaughtered at IB's internal assessment, regards, Smit Patel
Last reply by Daedalus, -
- 18 replies
- 14.5k views
Hi, I was wondering if someone here could tell me how to write a lab report from bio and chem well? I have several formats (ways of writing the lab reports) to follow, but they're different from each other and I'm not sure which pattern I should follow when writing these. So, I was wondering maybe someone here who has experience in this field could help me out? If there's anyone here who knows someone from their school who got a 6 or 7 on their lab reports, could you please tell me what pattern he/she followed? Also, could someone explain how does this grading system for lab reports function (e.g. when writing a Design lab report, is it necessary to write the whole lab …
Last reply by smit_312, -
- 7 replies
- 1.8k views
Hi, I am wondering which is the best SL science to pick as I am quite good at science, but aren't interested in taking it to uni. My favourite part of the subject is ethics, but I don't know which IB subject concentrates on this the most. In terms of my modules so far, I got C on core biology (getting a re-sit as my teacher made me do foundation and I got full marks), and A in core chemistry and core physics. I would not say I'm particularily strong or weak in any of the three. I can't do DT as it's not offered at my college, or Environmental Systems as the college uses that to fill the group 4 requirement for people who failed to get a B in science GCSE.
Last reply by Daedalus, -
- 3 replies
- 1.2k views
Hey everyone, just thought i'd start a discussion about tips with writing the prac reports... any ideas? so far i have found this really useful video: MASc
Last reply by Ambition, -
- 3 replies
- 874 views
I'm doing my E systems lab on the effect of soil moisture on the primary productivity of spinach. The problem (among many others related to this assignment) is that I've been looking for another experiment to compare mine to for the DEC portion of the lab (discussion, evaluation and conclusion) but I cannot find anything that isn't locked in some database. So two things Does the literature value need to be a lab/experiment that i compare it with or can it just be an article or web page? Secondly any clues on where i could find a literature value to compare with? Much thanks
Last reply by Tilia, -
- 1 reply
- 1.8k views
How do grade boundaries work? Say, do examiners take ALL the Chemistry SL exams, mark them and then decide on grade boundaries. Or, do they mark all Chem SL exams only in one timezone and then decide on grade boundaries(so that every timezone has a different grade boundary)?
Last reply by Mahuta ♥, -
- 11 replies
- 3.8k views
I'm having a difficult time deciding between Biology HL and Chemistry HL. I have the opportunity to take both, both at HL or one at HL and the other at SL. I'm fairly well at Chemistry; it seems simple. However, Biology would probably be better suited for what I plan to study at uni (Psychology with possible intent for grad school). From what I heard, Chemistry is mostly mathematics while Biology is memorization. Is there anyone who could give a full comparison of the two subjects, preferably someone who took both or are in the process in taking both? Thanks.
Last reply by soadquake981,
