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Here you'll find everything you need to prepare for GCSE (9-1) Science including our specification and sample assessment materials. A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place. Fission and Fusion Questions. Half Life and Uses. Please enable Strictly Necessary Cookies first so that we can save your preferences! Go! 15 years is three half-lives so the fraction remaining will be ()3 = 1/8 = 12.5 g. What is the half-life of a sample where the activity drops from 1,200 Bq down to 300 Bq in 10 days? The half-life is approximately 20 seconds Question 2 The mass of a radioactive substance over a 8 hour period is shown in the table below. Unbeatable support throughout the qualification. This is called the half-life. The number of decaying nuclei in a sample reduces with time due to radioactive decay. June 2016 Physics/ Science Unit P1: Universal Physics (5PH1H/01) - Higher. Isotopes with longer half-lives will contaminate areas for very long periods of time. and not all nuclei are likely to decay at the same time so it is impossible to tell when a particular nucleus will decay. It covers how the activity of a substance changes over time using half-life, how half-life can be used to work out how much of a substance will decay in a certain time and calculations involving half-life. June 2016 Physics/ Additional Science Unit . Square This is called the half-life. A radioactive sample of radium is placed in the fridge. Full coverage of topics needed for Edexcel and Cambridge (CIE). If your answer looks horrendous (eg. Some questions may require you to carry out calculations, so dont forget to bring your calculator to the examination. The first block of questions covers double science. Mark Scheme. This is called the, The Geiger-Muller tube is a device that detects radiation. There are 13 more questions available in this topic. The half-life of radioactive carbon-14 is 5,730 years. Scientists cannot tell when a particular nucleus will decay but they can use statistical methods to tell when half the unstable nuclei in a sample will have decayed. Clear and accessible exam papers with detailed guidance. One Becquerel is equal to one nuclear decay per second. The account is called physicsflash. Sketch, on the same axes, the activity of this sample for the first 4 days. Half Life Questions. ppt, 3.15 MB Full Lesson PowerPoint and resources to teach the GCSE 9-1 specification Physics lesson on Half-Life. It takes another two days for the activity to halve again, this time from 40 Bq to 20 Bq. If you are teaching only Combined Science the CP6 bundle will be more suited to you. If a sample of a tree (for example) contains 64 grams (g) of radioactive carbon, after 5,730 years it will contain 32 g, after another 5,730 years that will have halved again to 16 g. It should also be possible to state how much of a sample remains or what the activity or count should become after a given length of time. Half Lives - GCSE Physics (Combined) Edexcel Revision - Study Rocket Half Lives Half Lives Radioactive decay is a random process. I have also started an Instagram flash card account that pupils can follow for physics revision as they scroll. The time it takes for the number of radioactive nuclei to quadruple. Draw a graph of mass against time and use it to determine the half-life of the substance. The Geiger-Muller tube is a device that detects radiation. This process continues and although the activity might get very small, it does not drop to zero completely. You can find out more about which cookies we are using or selectively switch them on in settings. Lessons include easy to follow presentations that promote high levels of pupil engagement. Fast expert advice whenever you need. mrburditt. It is not possible to say which particular nucleus will decay next but given that there are so many of them, it is possible to say that a certain number will decay in a certain time. You can download the FREE resource GCSE Physics EDEXCEL 9-1 SP6 & CP6 Radioactivity Lesson outline and equipment list for this topic from my TES shop. Half of 1,200 is 600, half of 600 is 300. (2) Q7. the material used in nuclear power plants (usually uranium), is non-renewable. Specification. Get this resource as part of a bundle and save up to 29% The graph below shows how the activity of a sample varies with time.Determine the half-life of this material. Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve.. It is impossible to predict exactly when a nucleus will decay or which nucleus in a sample will decay. The FREE sample lesson GCSE Physics Energy Stores and Transfers FULL LESSON (Edexcel 9-1 CP3a SP3a) Conservation of Energy is also available to download from my TES shop. In this GCSE Physics Revision Guide, you will find high quality Radioactive Decay & Half Life GCSE Revision Notes and Past Paper Questions. Define net decline.undefinedThe number of decaying nuclei in a sample reduces with time due to radioactive decay. Keeping this cookie enabled helps us to improve the products and services we offer. GCSE Physics Edexcel Paper 1. Empty reply does not make any sense for the end user. The exam will always ask using the term potential difference, but you gain credit for using either potential difference or voltage in your answers. Titanium has a half-life of 63 years. If you disable this cookie, we will not be able to save your preferences. After a year, there is only 500 000 atoms left un-decayed.What is the half-life of this material? All questions are set primarily by topic, not by paper. Great lesson- very easy to follow with lots of great activities. 356 terms. 1 task in the PowerPoint requires the use of worksheets from the Pearson's ActiveLearn but could easily be replaced by other worksheets Tes paid licence How can I reuse this? Revision notes; AQA A-Level Chemistry; CIE A-Level Chemistry; Edexcel A-Level Chemistry; OCR A-Level Chemistry; Topics. Download Paper - Download Marking Scheme. registered in England (Company No 02017289) with its registered office at 26 Red Lion Last updated: 10/06/2020 Eduqas GCSE Science . A nucleus will regain stability by emitting alpha or beta particles and then 'cool down' by emitting gamma radiation. It gives an electrical signal each time radiation is detected. (i) Use the graph to find the half-life of the material. London WC1R 4HQ. xmaceythompsonx8. GCSE AQA Physics Topic Questions Paper 1 Topic 1 - Energy . Type Folder/File Size; pdf: Chapter 23 Exam Question: 156.7k: pdf: Chapter 23 Exam Question Mark Scheme: 251.2k: mp4: Chapter 23 Talking Paper: 9.4M: docx: Edexcel International GCSE Physics Chapter 23 Radiation and Half Life Learning Plan: 17.1k: pptx: Physics 4 2 Radioactivity: 1 . Edexcel GCSE Physics Paper 2. Thus, the two samples will have the same half-life. More information about our Privacy Policy, Edexcel International GCSE Physics Chapter 23 Radiation and Half Life Learning Plan. Prefer watching TikTok videos about this theory instead of reading it? A very small number of the resources require access to Pearson Active Teach, however, the vast majority are included in the presentations or as a separate file. The illustration below shows how a radioactive sample is decaying over time: From the start of timing it takes two days for the activity to halve from 80 Bq down to 40 Bq. mrburditt. Mark Scheme. Radiation. Hazards and Uses Questions. We use cookies to give you the best experience on our website. So if the half-life is two days, four half-lives is 8 days. Figure 4 shows a Geiger-Mller (GM) tube used for measuring radioactivity. Net decline can be expressed as (1/2) where x is the number of half-lives elapsed. Half-life is defined as: The time it takes for the number of nuclei of a sample of radioactive isotopes to decrease by half In other words, the time it takes for the activity of a sample to fall to half its original level Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length Describe what this means for a sample of titanium.undefinedThe half-life of titanium says that half of the radioactive nuclei in the sample of titanium will decay in 63 years. However, half-life gives the time taken for half the nuclei of a sample to decay and thus the activity of the sample to halve. You also need to be able to model radioactive decay processes, be able to measure a half-life on a graph, and execute half-life calculations. Nuclear Fission and Fusion. Read about our approach to external linking. A very small number of the resources require access to Pearson Active Teach, however, the vast majority are included in the presentations or as a separate file. The correct answer is 'Geothermal, the tides and hydro-electricity'. Thanks for the review, glad you liked it! This could be stated as a fraction, decimal or ratio. Net decline. Step 1: Draw lines on the graph to determine the time it takes for technetium to drop to half of its original activity, Step 2: Read the half-life from the graph. Equation The equation which you need to recall and apply is: Potential difference = current x resistance This can also be written as: V = I x R V = potential difference, volts (V) I = current, amps (A) Look at the front Read more , Copyright 2022 All Rights Reserved - iGCSE Science Courses. This bundle includes 8 full lessons with associated resources plus my lesson overview and resources list for the topic (ones highlighted in blue for combined science). Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful. CIE IGCSE Physics: Revision Notes CIE IGCSE Physics > Revision Notes Detailed revision notes for the CIE IGCSE 0972 / 0625 syllabus 1.1 Length & Time 1.2 Motion 1.3 Mass & Weight 1.4 Density 1.5 Forces 1.6 Momentum 1.7 Energy, Work & Power 1.8 Pressure 2.1 Simple Kinetic Molecular Model of Matter 2.2 Thermal Properties [] 1. All text is lifted from and copyright of Chapter 24 of Edexcel IGCSE Physics Student Book and the accompanying revision guide. The half-life of cobalt-60 is 5 years. Ready to take it to the next level? Best of luck! Stores and Transfers. GCSE Physics Revision Cards are a quick and easy way to revise. These MME Physics revision cards cover all the major topics within the AQA GCSE Physics specification. And when it comes to our assessments, they're shaped to encourage all students to best show what they know and can do. 2. One Becquerel is equal to one nuclear decay per second. The activity of a radioactive substance is measured in Becquerel (Bq). These signals can be converted into clicking sounds, giving a count rate in clicks per second or per minute. Conditions. GCSE Physics revision Energy stores and systems Conservation and dissipation of energy Current, potential difference and resistance Mains electricity Energy transfers Static electricity Changes of state and the particle model Internal energy and energy transfers Particle model and pressure Atoms and isotopes Atoms and nuclear radiation Nuclear fission and fusion Forces and their interactions . Radioactive decay is a random process. View Product 020 3633 5145 The time it takes for the number of non-radioactive nuclei to halve. It covers how the activity of a substance changes over time using half-life, how half-life can be used to work out how much of a substance will decay in a certain time and calculations involving half-life. Full lessons with resources for those teaching GCSE Edexcel Physics Topic 6 (for Triple Science and covers what you need for Combined Science Topic 6). Although half-life is not affected by chemical and physical reactions, different isotopes have different values for half lives, which come with different hazards. Now an experienced GCSE and A Level Physics and Maths tutor, Ashika helps to grow and improve our Physics resources. 5.66782) Read more , Know what to expect. https://goo.gl/gQhr7S to unlock the full series of GCSE Physics & Combined Science videos created by A* students for the new 9-1 OCR, AQA and Edexcel specifi. Half Life and Uses. Net decline can be expressed as (1/2) where x is the number of half-lives elapsed. Group Code Registration Form; Biology Reading List; . The profit from every pack is reinvested into making free content on MME, which benefits millions of learners across the country. Our customer service team will review your report and will be in touch. All the extra questions you need to take the separate Physics GCSE are in the Triple science Topics section. Due to the random nature of radioactive decay, it can never be known which nucleus will decay next. a fraction - a of a of a of a remains which is x x x = 1/16 of the original sample, a decimal - 1/16 = 0.0625 of the original sample, 15 years is three half-lives so the fraction remaining will be (), Uses and dangers of radioactivity - Edexcel, Sample exam questions - radioactivity - Edexcel, Home Economics: Food and Nutrition (CCEA). For example the amount of a sample remaining after four half-lives could be expressed as: This could then be incorporated into other data. Upgrade and access all questions. What is half-life of a radioactive isotope? Last minute stuff. Your rating is required to reflect your happiness. Mark Schemes. The resource is appropriate for Triple and Combined Science classes, Foundation and Higher tiers. Download Paper - Download Marking Scheme. Edexcel GCSE Physics Topic Questions; Edexcel GCSE Combined Science Exam Papers; Edexcel Maths Exam Papers; . Explain the differences between the half-lives of the two samples.undefinedHalf-life is not affected by any chemical or physical reactions, thus putting a radioactive sample in a fridge will not affect its half-life. Full Lesson PowerPoint and resources to teach the GCSE 9-1 specification Physics lesson on Half-Life. 1. Edexcel GCSE Physics worksheets These worksheets are provided for private study only and are not to be used for any financial gain. These are perfect for students to work through in lessons or independently at home. Lessons include easy to follow presentations that promote high levels of pupil engagement. With the wrong number of neutrons, nuclei can fall apart. The radioisotope technetium is used extensively in medicine. help bring science learning to life. Full lessons with resources for those teaching GCSE Edexcel Physics Topic 6 for Combined Science. The number of decaying nuclei in a sample reduces with time due to radioactive decay. However, you do not always need to use your calculator you can often do the calculations in your head as they usually involve simple numbers. This means that every time you visit this website you will need to enable or disable cookies again. Key Concepts of Physics Worksheets to support all areas of GCSE Physics! In the diagram above the initial activity, Therefore, the half-life of this isotope is, Therefore, the sample has undergone 2 half-lives, 1 year divided by 2 is half a year or 6 months. June 2016 Edexcel GCSE Physics Past Exam Papers (2PH01) June 2016 Physics/ Science Unit P1: Universal Physics (5PH1F/01) - Foundation. They contain a high number of challenge tasks that are built into the lesson resources to stretch even the most able. Tes Global Ltd is Give two reasons why this might not be good idea. Example Question 3 A student suggests replacing a coal power station with solar panels on the same site. This website uses cookies so that we can provide you with the best user experience possible. This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages. Isotopes with shorter half-lives will be more intense due to the fact that more decays will occur per second, which can be extremely dangerous when ingested. Motion and forces . Study Mind. 4. [2 marks] Section 7: Radioactivity and particles b) Radioactivity understand that ionising radiations can be detected using a photographic film or a Geiger-Muller detector explain the sources of background radiation understand that . Study with Quizlet and memorize flashcards containing terms like What does half-life mean and why is it used?, , and more. Half-life 2. Last time we talked about knowing your equations, and how you should have prepared for these before the exam. Note that nuclear fuel, i.e. So it takes two half-lives to drop from 1,200 Bq to 300 Bq, which is 10 days. Isotopes with longer half-lives will contaminate areas for very long periods of time. It gives an electrical signal each time radiation is detected. . How many elements are there in the Periodic Table. The bundle includes 13 full lessons with associated resources plus my lesson overview and resources list for the topic. EDEXCEL IGCSE / CERTIFICATE IN PHYSICS 7-2Radiation and Half-life February 1st 2013 All content applies for Triple & Double Science Edexcel IGCSE Physics pages 209 to 215. 164 terms. Mark Scheme. This reduction can be expressed as net decline after a certain number of half-lives. 1.1.3 Core Practical: Investigating Motion, 1.2.8 Core Practical: Investigating Force & Extension, 2.1 Current, Potential Difference & Resistance, 2.2 Components in Series & Parallel Circuits, 2.4.2 Core Practical: Investigating Charging by Friction, 2.4.4 Uses & Dangers of Static Electricity, 3.2.3 Core Practical: Investigating Refraction, 3.2.5 Core Practical: Investigating Snell's law, 3.3.1 Core Practical: Investigating the Speed of Sound, 3.3.3 Core Practical: Using an Oscilloscope, 4.1.5 Core Practical: Investigating Thermal Energy, 5.1.2 Core Practical: Determining Density, 5.2.3 Core Practical: Investigating Changes of State, 5.2.5 Core Practical: Investigating Specific Heat Capacity, 6.1.4 Core Practical: Investigating Magnetic Fields, 7.1.4 Core Practical: Investigating Radiation, It is impossible to know when a particular unstable nucleus will decay, But the rate at which the activity of a sample decreases can be known, In other words, the time it takes for the activity of a sample to fall to half its original level, Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length. 3. GCSE Physics - Radioactive decay - Half-life. Half-life is defined as: The time taken for half the undecayed nuclei to decay or the activity of a source to decay by half In other words, the time it takes for the activity of a sample to fall to half its original level Different isotopes have different half-lives and half-lives can vary from a fraction of a second to billions of years in length Our tips from experts and exam survivors will help you through.
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