Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika
Hendar Sudrajad
Physics Education, University of Riau
Education Physics Social Sciences

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
MEASUREMENT OF VISCOSITY USES AN ALTERNATIVE VISCOMETER Oktabella Regina; Hendar Sudrajad; Dina Syaflita
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 6, No 2 (2018)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.428 KB) | DOI: 10.31258/jgs.6.2.127-132

Abstract

Physics learning for fluids can be done by practical methodes in orther the students really understand about the fluids concepts. One of the fluids learning that needs to be practice is about viscosity. Measuring instrument used to determine the viscosity of a liquid is a viscometer. This viscosity measuring instrument can measure the thickness of a fluids accurately and specifically in accordance with predetermined standards. Due to the importance of the amount of viscosity, it is necessary to know the measurement method easily, cheaply and thoroughly. One way that can be used is to use an alternative viscometer as a measure of fluids viscosity. The purpose of this research is to produce an alternative viscometer that can measure the viscosity of a fluids. The type of this research is research and development, namely developing and measuring with an alternative viscometer. This research results that the measurement with an alternative viscometer for several liquids with different viscosity, gets a value that is not much different from the standard viscosity measurement results. The conclusion of the results of this research is that an alternative viscometer can be used to determine the viscosity of a liquid.
DESIGN AND BUILD UP THE STIRRER VISCOMETER Lamria Sri Manurung; Hendar Sudrajad
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 6, No 2 (2018)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (274.382 KB) | DOI: 10.31258/jgs.6.2.98-104

Abstract

Fluids are substances that can flow. One of the flow substances is liquid. Every liquid has a characteristic that distinguishes a liquid from another liquid. One characteristic of a liquid is viscosity (thickness). The measuring instrument used to determine the viscosity of a liquid is a viscometer. Due to the importance of the amount of viscosity, so it is necessary to know the measurement easily, cheaply, and thoroughly. One method is to use a stirrer viscometer as a liquid viscous measurement devices. The purpose of this research was to determine the construction and test the designed stirrer viscometer. The research method used is the experimental method. The procedure of this research includes designing, assembling, and testing a stirring viscometer. The results of experiments that have been carried out show that the stirrer viscometer devices can to used to measure the viscosity of liquids with time and temperature indicators. This tool effectively proves that the temperature affects the viscosity of a liquid where the higher the temperature of the liquid, the lower the value of the viscosity of the liquid, and conversely the lower the temperature of the liquid, the higher the viscosity value of the liquid.
DEVELOPMENT OF LEARNING MEDIA AND STUDENT WORK SHEETS ON FORCE AND WORK-ENERGY MATERIALS BASED LOCAL CULTURE TOOLS IN THE PHYSICS SCIENCE LEARNING FOR JUNIOR HIGH SCHOOL Fakhruddin Z Fakhruddin Z; Yennita Yennita; Hendar Sudrajad
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 5, No 1 (2017)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.046 KB) | DOI: 10.31258/jgs.5.1.32-40

Abstract

The purpose of this study was to examine the validity of experimental tools and student worksheets resulting from research based on traditional cultural tools on the topic of force, newton’s law, work and energy. The research method used is research and development or Reseacrh and Development. This research was conducted in physics education laboratory of PMIPA FKIP University of Riau with the subject of experiment media research based on traditional culture equipment on the topic of force, newton’s law, work and energy with data source three physics education experts and two senior teachers as validator. The data analysis used is descriptive analysis that categorizes the average validity scores of experimental tools and student worksheets on force, newton’s laws, work and energy based of traditional cultural equipment. Based on data analysis, the research results obtained the average score with good category and very good, both for the validity of the experimental tool and for the student worksheet for all aspects. It shows experimental tools and student worksheets based on traditional cultural tools are valid and can be used as experimental tools and worksheets of junior physics students.
ERROR ANALYSIS IN SOLVING STRAIGHT MOTIONS' PROBLEMS OF SENIOR HIGH SCHOOL STUDENTS IN PEKANBARU Vetty Vellancia; Zulirfan Zulirfan; Hendar Sudrajad
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 7, No 2 (2019)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.66 KB) | DOI: 10.31258/jgs.7.2.96-103

Abstract

Errors are deviations from things that have been known to be true, errors by students in solving problems can be used by the teacher as a tool in knowing the extent of student ability, so that it can be known the difficulties experienced by students in the learning process. The purpose of this research is to describe the types of errors made by students in solving physics problems on straight motion material at SMAN 5 Pekanbaru. Population in this research were 360 students of class X SMAN 5 Pekanbaru. Samples were taken randomly and a total of 72 students were obtained. This research instrument was in the form of essay questions which were arranged based on the types of errors commonly made by students. Data was collected by giving essay test questions to the research sample. Data analysis in this research uses descriptive analysis with percentage techniques, which provide an overview of the level of errors made by students. Using the six  questions that were tested, the most dominant type of error was obtained by students, namely the types of concept errors and data calculation errors, while the types of errors that were least experienced by students were the types of mathematical errors. For this reason, in learning physics on the topic of GLBB in class X SMA N 5 Pekanbaru, it is necessary to emphasize understanding of concepts and calculation of data that is more optimal so that students get better learning outcomes.
Co-Authors Fakhruddin Z Lamria Sri Manurung Oktabella Regina Syaflita, Dina Vetty Vellancia Yennita Yennita Zulirfan Zulirfan