Jurnal Ilmiah Pendidikan Fisika Al-Biruni

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ISSN / EISSN : 2303-1832 / 2503-023X
Total articles ≅ 129
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Viyanti Viyanti, Cari Cari, Zuhdan Kun Prasetyo, Hervin Maulina
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 177-183; doi:10.24042/jipfalbiruni.v9i1.6264

A performance feature is a domain-specific to the organization of knowledge. Well-organized knowledge is characterized when students are able to collaborate the knowledge features of the physics problem. The knowledge feature can be a cognitive activity where teachers influence students by changing the pattern of knowledge from "defining" to "applying" knowledge. This research aims to analyze whethet the cognitive activity from the teacher can generate student’s argumentation performance features or no. This study is a qualitative descriptive study which involved 100 of high school students in Bandar Lampung. The data was collected using a research instrument in the form of reasoned multiple choices which has been validated. The results of this study showed that students' involvement in cognitive activity by following variety of procedures can generate student’s argumentation performance fetaures.
Yul Martin, Diah Permata, Annisa Ulya, Dikpride Despa, Marwansyah Marwansyah, Ali Rahmat
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 133-140; doi:10.24042/jipfalbiruni.v9i1.6281

The increasing frequency of lightning strikes endangers human safety and life. The grounding system was introduced to face the lightning strikes. This research aimed to understand the changes of grounding resistance value using concrete mixed with bentonite and coconut fiber. The research was conducted in the Laboratory of Electrical Engineering, University of Lampung. The research was started from October 2017 to April 2018. This research used the Ufer grounding system. Concretes with (25 x 25 x 30) cm3 in volume were planted at a depth of 50 cm with copper-coated electrodes that were 16 mm in diameter. 4 concrete was produce with different component T1= concrete, 30% bentonite, T2= concrete, 30% bentonite, 1.5% coconut fiber, T3= concrete, 30% bentonite, 0.75% coconut fiber, T4= concrete + 1.5% coconut fiber. The results show that the lowest grounding resistance values were 45.896 Ω on the concrete with bentonite: cement: sand: gravel = 0.3: 0.7: 2: 4. By adding 1.5% coconut fiber, the grounding resistance value is 3.5 times smaller than the grounding resistance values of the soil (161.2 Ω). Adding bentonite and coconut fiber can decrease the grounding resistance values
Bayu Achil Sadjab, I Putu Tedy Indrayana, Steven Iwamony, Rofiqul Umam
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 141-160; doi:10.24042/jipfalbiruni.v9i1.5394

This research aimed to investigate the distribution, volume, and concentration of iron sand at Wari Ino Beach Tobelo. The resistivity method with Werner-Schlumberger configuration was applied to investigate the iron sand distribution. The measurements were set-up on 3 lines that run parallel along the coast of Wari Ino Village. The length of each trajectory was 150 meters with a spacing of 10 meters for each electrode. Data acquisition was carried out by using geoelectric instruments to obtain current injection (I) and voltage (V). The analysis was carried out by using RES2DINV and ROCKWORK software to obtain 2-D and 3-D cross-section models for interpreting the distribution and volume of the iron sand. The analysis and interpretation were supported by geological data of the location. Furthermore, the Fe content was characterized by using X-Ray Fluorescence Spectroscopy (XRF). There results show that the volume of the iron sand in each trajectory was 109,355 m3; 180,254 m3; and 120,556 m3. The total volume of iron sand along the three trajectories was up to 405,335 m3. The Fe content in the form of a free element is 67.41%, 57.12%, and 73.40%. The Fe content in the form of hematite mineral (Fe2O3) was 57.92%, 45.82%, and 65.47%.
Yoga Prastowo Mukti, Mohammad Masykuri, Widha Sunarno, Ulin Nuha Rosyida, Zuhair Jamain, Mahamboro Dawud Dananjoyo
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 121-131; doi:10.24042/jipfalbiruni.v9i1.4561

The purposes of the research were to know the difference between the student cognitive achievement who learned using PjBL and Discovery Learning models, between the student who had the high and low analyzing ability, and their interaction. The research population included the seventh-grade students in one of the Islamic state schools in Surakarta. The research subjects were students with different knowledge capabilities from low to high levels. The method has been implemented was experimental research. A two-way Anava test was chosen for the technique of analyzing data in this research. In collecting data, the multiple-choice test was used based on aspects of analytical abilities, namely mental flexibility, verbal reasoning and reading comprehension, scientific and mechanical reasoning. The result showed that there is the effect of the application of PjBL and Discovery learning model on cognitive achievement with the significance value 0,05, there is the effect between high and low analyzing ability on cognitive achievement with the significance value 0,05 and there was no interaction between learning model and analyzing ability on cognitive achievement with the significance value 0,05. This study implies that the PjBL model and discovery have a significant impact on student learning outcomes so that they can be used for other science subjects by paying attention to the internal factors of students that will be used as a review
Awal Mulia Rejeki Tumanggor, Supahar Supahar, Ernila Siringo Ringo, Muhammad Dika Harliadi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 21-31; doi:10.24042/jipfalbiruni.v9i1.4571

This research aims to develop the test instrument that is feasible in terms of validity, reliability, and difficulty level and to identify students' misconceptions in simple harmonic motion concepts. The development stages used in this research were the modifications result from Oriondo Dalo-Antonio, which included: (1) planning and design development, (2) trying out, and (3) measurement and interpretation of results. The instrument has been developed and categorized as effective because it is declared valid and reliable based on the criteria of the lowest and highest limit of the INFIT MNSQ which is 0.77 and 1.30, all test items are fitted with the PCM model, and the instrument's reliability has an item reliability value of 0.73 with a good category. The test instrument was applied to 60 students of the tenth-grade of senior high school. Based on the results, the four-tier test instrument developed was able to identify students' conceptual understanding of 36.4%, and 17.7% of students only understood parts of concepts, 40.7% of students experienced misconceptions, and 5.2% of students did not know the concept. The biggest misconception occurred in the subtopic frequency of simple harmonic motion by 75%, the relationship of the rope length with the pendulum vibration period by 60%, and 58.3% about the relationship between the total spring constant and the spring frequency. The instrument developed in this research was able to detect students' misconceptions, especially student learning experiences about simple harmonic motion
Sely Novita Sari, Rizqi Prastowo, Rahmad Junaidi, Amir Machmud
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 51-59; doi:10.24042/jipfalbiruni.v9i1.5190

Landslides are the biggest threat in the Kalirejo area. The dynamics of land movements in the mountains often cause cracks and potentially collapse. Landslides due to land fractures caused building damage. This study aimed to analyze the condition of a simple building on the influence of land fracture. The method used was conducting a field survey of existing buildings in the Kalirejo area. The data of the surveys were the percentage of building damage and building categorization. From the results of the analysis, the percentages of buildings in the safe category were 78 buildings or 54.17%, the buildings of the unsafe category were 51 buildings or 35.42%, and buildings with the unsafe category were 15 buildings out of 144 surveyed building with the percentage of 10.42%. Based on the results of the analysis using the Rapid Visual Screening (RVS) method, 15 buildings with unsafe conditions need to be relocated because they do not use the minimum structure required for simple buildings while the 51 buildings with unsafe conditions, repairs must be made to the structure according to the minimum requirements of simple buildings
Prasetyo Listiaji, Muhamad Taufiq, Ni Luh Tirtasari, Anisia Kholidah, Nia Annisa Ferani Tanjung
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 1-7; doi:10.24042/jipfalbiruni.v9i1.5661

Linear air track is often used in physics learning for linear motion experiments because it can reduce friction between objects with trajectories. However, the use of air tracks for motion experiments in schools often does not care about aspects of air drag, so the purpose of this study is to calculate the air friction contained in the air track and as an offer of enrichment experiments at senior high school. The research method used is an experimental method that uses a set of air track experimental devices consisting of trajectors, carts, blower, and time counters with light sensors. Cart objects with a mass of 120.02 gram is given the initial velocity variation 12.272 cm/s, 16.286 cm/s and 24.599 cm/s. Then the time recorded when the cart crosses the distance of 10 cm to 110 cm at intervals of 10 cm. This experiment is conducted in the Integrated Science Laboratory, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang. The second Newton law has been derived to obtain a special exponential function, so the relation between distance and time is obtained. The non-linear relation between distance and time shows the effect of air drag. Then, fitting the graph of the distance and time relation so that the air drag constants obtained are (10.6 ± 0.1) gram/s, (10.6 ± 0.2) gram/s, and (11.1 ± 0.2) gram/s. The results of the air drag constants obtained can be additional data as a factor affecting experiments using linear air track and can be enrichment experiments at senior high school laboratory.
Mastuang Mastuang, Alfis Sa'adah, Sri Hartini, Mustika Wati, Saiyidah Mahtari, Misbah Misbah, Nurul F Sulaeman
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 61-71; doi:10.24042/jipfalbiruni.v9i1.4799

This study aims to describe the feasibility of student worksheets on natural science with Kokami (Kotak Kartu misterius/ mysterious card box) media to increase the students’ learning outcome. The themes of the developed product are work and energy for junior high school level students. The specific objectives of this study were to describe the validity, practicality, and effectiveness of natural science students' worksheets with Kokami media. The type of this research is research and development with the ADDIE development model. The test subjects were 36 students from one of the public junior high school in Barito Kuala regency. The instruments of this research were validation sheets, questionnaires, and learning outcomes tests. The results showed that: 1) the validity of students’ worksheets of natural science with the Kokami media was included in the highly valid category, (2) the practicality of students’ worksheets of natural science with the Kokami media was in the very good category, and (3) the effectiveness of students’ worksheets of natural science with Kokami media was in the high category. It can be concluded that the natural science students' worksheets with Kokami media were feasible to be used at the junior high school level. Kokami media can be an effective and attractive alternative learning media in learning physics
Ida Sriyanti, Meily P Agustini, Jaidan Jauhari, Sukemi Sukemi, Zainuddin Nawawi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 9-19; doi:10.24042/jipfalbiruni.v9i1.5747

The purposes of this research were to investigate the synthesized Nylon-6 nanofibers using electrospinning technique and their characteristics. The method used in this study was an experimental method with a quantitative approach. Nylon-6 nanofibers have been produced using the electrospinning method. This fiber was made with different concentrations, i.e. 20% w/w (FN1), 25% w/w (FN2), and 30% w/w (FN3). The SEM results show that the morphology of all nylon-6 nanofibers) forms perfect fibers without bead fiber. Increasing fiber concentration from 20% w/w to 30% w/w results in bigger morphology and fiber diameter. The dimensions of the FN1, FN2, and FN3 fibers are 1890 nm, 2350 nm, and 2420 nm, respectively. The results of FTIR analysis showed that the increase in the concentration of nylon-6 (b) and the electrospinning process caused a peak shift in the amide II group (CH2 bond), the carbonyl group and the CH2 stretching of the amide III group from small wave numbers to larger ones. The results of XRD characterization showed that the electrospinning process affected the changes in the XRD pattern of nylon-6 nanofiber (FN1, FN2, and FN3) in the state of semi crystal. Nylon-6 nanofibers can be used for applications in medicine, air filters, and electrode for capacitors
Ridho Adi Negoro, Ani Rusilowati, Mahardika Prasetya Aji, Rosly Jaafar
Jurnal Ilmiah Pendidikan Fisika Al-Biruni, Volume 9, pp 73-86; doi:10.24042/jipfalbiruni.v9i1.4834

The debate in the making of critical thinking evaluation tests among researchers and practitioners still exists. Problems come from definition and aspects segmentation which represents critical skills to be measured. According to the problems, the specific critical thinking instruments to physics content such as momentum are still hard to find. The instrument of critical thinking can support the learning evaluation to improve the critical power of Pre-Service. This study aims to develop the instrument of momentum critical thinking (MCT) test for Pre-service teachers. The MCT consisted of 8 questions representing 17 objective items. Based on the content validity test, it obtained a total percentage of 81.25% with the eligibility criteria. The reliability test demonstrated by the result of 28 pre-service teacher tests. The MCT instrument which tested was 17 objective items. The reliability test’s results showed Cronbach's alpha value of 0.716 with a high category. Research findings show that the CTM test can be used to measure the CT-specific domain of pre-service teachers in momentum, and relevant material for the consideration of university preparation for pre-service teacher learning in the 21st century
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