Essential physics gcse by focus educational software. Its very worrying that fewer than half of 16yearolds are achieving the basic level of qualifications and that the huge gap between rich and poor still remains. The qualification consist of three components 01 computer systems written paper 1 hour and 30 minutes 80 marks 40% of total gcse paper 01 and mark scheme. The term is also used more generally to characterize any type of exponential or nonexponential decay. We cannot predict exactly which atom will decay at a certain time but we can estimate, using the half life, how many will decay over a period of time. Halflife is a half the time a radioactive particle lives b twice the time a radioactive particle lives c the time taken for half the radioactive nuclei to decay d half the time taken for radioactivity to finish. Edexcel gcse computer science key questions flashcards. Half life gcse physics revision science with hazel youtube. Scientists look at halflife decay rates of radioactive isotopes to estimate when a particular atom might decay. See more ideas about gcse physics, physics and educational software. Gcse physics revision physics notes science notes science lessons chemistry revision half life chemistry science chemistry science education teaching science. Predict what happens to an element when it undergoes alpha decay. Physics single science forces, space and radioactivity. At the start of the measurement the radioisotope has 10,000 unstable nuclei.
Nt n02tt where t is the halflife of the material, and n0 is the initial amount of material at time t. Because of that, i seek out resources that offer learning through living. Ocr gateway measuring halflife using graphs and calculating involving halflives. Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. The pilot is intended to create a greater emphasis on designing software and writing computer programs in school. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo, or how long stable atoms survive, radioactive decay. Wjec apology after gcse computer science exam problem bbc news. We then look at how to determine the half life and how to calculate the countrate after a given number of half. I remember science being incredibly dry and boring in school and i want my childrens science experience to be anything but boring. Radioactive halflife halflife wjec gcse physics single. Because of that, i seek out resources that offer learning through living books and lots and lots of experiments. Gcse computer science half termly schedule students follow the edexcel gcse 91 computer science course.
What fraction of the atoms will have decayed after 6 hours. Jul 25, 2017 in this video, we look at what is meant by the half life of a radioactive isotope. Year group term topic and content 10 autumn 1 topic 1. State where background radiation comes from and draw a pie chart to show this. Combined science gcse pocket posters the ultimate revision, classwork and. Oct 15, 2009 in science, there was an increase in the proportion of students getting two or more gcses at a to c up 3.
Weaving together a fascinating personal life and the politics of the cold war with his usual insightful exposition of physics, close has produced a triumph of scientific biography. So just unzip for windows any version inc windows 7. Half life is a half the time a radioactive particle lives b twice the time a radioactive particle lives c the time taken for half the radioactive nuclei to decay d half the time taken for radioactivity to finish. The included half lives range from 10 minutes to 60. My gcse science premium video tutorials, examstyle. Schima this database is a table of the half lives of 65 important radionuclides measured primarily with ionization chambers by the radioactivity group of nist.
Boardworks gcse science free version download for pc. See how random decay times relate to the half life. In this video, we look at what is meant by the halflife of a. Radioactive isotopes are used for blood flow monitoring, cancer treatment, paper mills, carbon dating and smoke alarms. A radioactive substance has a half life of 30 minutes. The physics boot camp team has decades of experience of helping students of all abilities improve their gcse grades new for the 2018 exams, this course covers all the content for the gcse physics 91 specifications of aqa, edexcel, ocr 21st century science and ocr gateway the course is broken down into 8 sections where you will. Ks4 gcse learning programmes weaverham high school. In this cgse physics revision video, hazel takes you through some half life questions and talks you through how to answer them. Recognise characteristics of ionising radiation and how they are similar and different. Half life gcse physics revision science with hazel. Half life is the time it takes for half of the radioactive particles to decay.
Half life radioactive decay aqa gcse physics single science. Science revision, physics cheat sheet, new gcse, nuclear physics, half life, cheat sheets, biology. Nt n02tt where t is the halflife of the material, and n0 is the initial amount of material at time t 0. These videos are designed to help with your gcse science revision. Gcse physics revision physics notes science notes science lessons chemistry revision half life chemistry science chemistry science education teaching science a great way to visualise the whole of p1b at a glance. After 1 halflife, half the initial amount is remains, after 2 halflives, half of half i. Our uniquely flexible science course means that even if youre working fulltime or caring for family, you can fit learning around your busy life. I was predicted 5s and came out as the most improved student in my school year. Gcse computer science 91 students studying gcse computer science and starting it in sept 2016 will have the qualification graded on a scale from 91. Reference numbers next to the topics covered refer to the relevant section of the syllabus.
Apr 17, 2016 in this cgse physics revision video, hazel takes you through some half life questions and talks you through how to answer them. Half life is the time taken for half of the radioactive nuclei to decay. The term is commonly applied to radioactive decay, where the reactant is the parent isotope and the product is a daughter isotope. Choose from 500 different sets of half life science flashcards on quizlet. This has to do with figuring out the age of ancient things. Fewer than half gcse computing students got a b or higher. If you need help with physics, youre in the right place. Boardworks gcse science a complete wholeclass teaching resource for exciting and inspirational lessons from adaptation to renewable energy, boardworks gcse core science boasts a wealth of high quality, readyprepared and completely customisable resources which fully cover the 2011 gcse specifications and help you deliver.
See more ideas about science, gcse science and science revision. Ks4 gcse learning programmes weaverham high school lime. A fully featured msi installer program all on gcse half life for the new year 10 aqa gcse. Revision help computer science how did that exam go the 2019 gcse exam sentiment thread. If a fossile contains grams of carbon14 at time, how much carbon14 remains at time years. Its a double award, meaning that youll study one course but receive two igcses. If i did the ocr computer science gcse could i do the aqa computer science alevel. Free science curriculum for all grades life in the nerddom. Despite a positive start when the computing gcse was launched in 20, the numbers signing up have plateaued in the past year some 64,159.
Fewer than half gcse computing students got a b or higher this year teachers need more support to tackle chronic shortages computer science gcse male dominated, but. May 16, 2019 an apology has been made to gcse pupils after a technical issue affected their computer science exam. It is also the time it takes for the countrate of a substance to reduce to half of the original value. Explain the concept of half life, including the random nature of it. Biology, biology gcse questions, gcse biology by assessment wiz, and many more programs.
I got a 99 in my combined science results today and all the credit goes to your videos. An apology has been made to gcse pupils after a technical issue affected their computer science exam. A researcher measures 200 counts per minute coming from a radioactive source at midday. The animation below explains the half life of a radioactive isotope.
As this is for an assignment, dont forget that when you submit it, you must acknowledge any help received. It has many features all of which can be tested in this demo available for free download. If you dont have your gcse in this subject but have been made an offer for primary teacher training with us this september or have been directed to us by a teacher training provider that you are due to start a course with this autumn and have been directed here to consider our online gcse. Half life is an enthralling insight into the life and times of one of the most mysterious characters of twentieth century science. Halflife is the time taken for half of the radioactive nuclei to decay 2. After one half life the activity will fall to 12 of the starting value, after a second half life it will have fallen to half of that i. The conservatives said the gcse results showed 320,000 of those aged 16 did not reach the minimum level expected. In this video, we look at what is meant by the halflife of a radioactive isotope. A bit is the smallest unit of data a computer can use. Science gcse is prerequisite qualification if you want to train to teach in a primary school. Students in year 10 are due to take their gcse exams in summer 2021 and many of them are currently worried that they are missing valuable lesson time. When using the online version teachers can copy direct links to topics into presentations and share with students when setting homework. Gcse principal examiners usually report that finding a. Igcse edexcel separate science and higher tier only.
The use of the software modellus to model radioactive decay. Igcse science double award online course ics learn. Please see terms and conditions in the readme file. Over a hundred interactive topics are explained clearly through simulations, images and videos. A radioactive substance has a halflife of 30 minutes.
Halflife is the time it takes for half of the radioactive particles to decay. Science gcse equivalency tests school of education and. This biological technology is evolvable, selfreplicating, selfrepairing and is responsive to external stimuli. Remember one of the above definitions, it may be useful in the exams an explanation of halflife a radioactive material will have. Edexcel gcse computer science key questions quizlet. The term is commonly applied to radioactive decay, where the reactant is the parent isotope and the product is. Youll cover biology, chemistry and physics, giving you a wideranging knowledge of science as a whole.
Modelling radioactive decay halflife wjec gcse physics. Halflife is an enthralling insight into the life and times of one of the most mysterious characters of twentieth century science. Essential physics gcse is the natural progression from our very popular ks3 title. A good portion of what weve used for science over the years has been free resources. We are dedicated to improving the working lives of teachers and making gcse learning stick. What fraction of the atoms will not have decayed after 1 hour. Jun 21, 2009 the amount of material present changes with time. Perfect for whole class teaching and independent study. Combined science gcse revision books pocket posters. Halflife is the time taken for the count rate to fall to half of its original reading there are a number of ways to define halflife. We cannot predict exactly which atom will decay at a certain time but we can estimate, using the. Science inspiring resources for k12 from cells to the solar system, boardworks science products contain a wealth of high quality, readyprepared resources for your interactive whiteboard or classroom projector that are mapped to your state standards and help you teach extraordinary lessons.
Worksheet half life calculations teaching resources. The time required to convert one half of a reactant to product. We then look at how to determine the halflife and how to calculate the countrate after a given number of half. Brian cox lecture gcse science brought down to earth. As a science teacher, i thought id try and help ease both problems by offering some online gcse science tuition using zoom software. The time taken for half the number of radioactive nuclei atoms to decay.
The equation for radioactive decay is, where is the original amount of a radioactive substance, is the final amount, is the half life of the substance, and is time. Parents complained problems meant the start was delayed while pupils could not answer one of. Learn about and revise nuclear radiation, radioactive decay and halflife with gcse bitesize physics. Jul 29, 2009 radionuclide halflife measurements made at nist. The isotope uranium238 has a half life as long as 4. New for the 2018 exams, this course covers all the content for the gcse physics 91 specifications of aqa, edexcel, ocr 21st century science and ocr gateway. Aug 24, 2017 despite a positive start when the computing gcse was launched in 20, the numbers signing up have plateaued in the past year some 64,159 year 11 students registered for the computer science. That means that 1 hour is 2 halflives for the substance.
If you could watch a single atom of a radioactive isotope, u238, for example, you wouldnt be able. After one halflife the activity will fall to 12 of the starting value, after a second halflife it will have fallen to half of that i. Halflife wjec gcse physics single science revision bbc. It then installs locally and gives you a full suite of animations and games to play about half life of isotopes for gcse level and a focus on the use of tracers. A useful application of halflives is radioactive dating. So you can be confident that our gcse combined science. Bbc news uk education fewer than half get gcse minimum. Learn half life science with free interactive flashcards. I got an 8 in both physics and biology and a 7 in chemistry. That means that 1 hour is 2 half lives for the substance.1361 341 1135 395 30 664 837 1306 1255 64 627 188 1501 1182 555 999 1452 1243 703 796 1589 851 880 477 805 326 1036 685 1346 1244 991 486 1332 458 1394 1199 470 528 1115 866 78 1235 395 1285 945 190