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All Journal JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Spektra: Jurnal Fisika dan Aplikasinya
Cherly Salawane
Universitas Negeri Semarang, Universitas Halmahera
Aerospace Engineering Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Teaching Material using SETS Approach for Volcanic Dust Disaster Mitigation Cherly Salawane; Supriyadi Supriyadi; Ani Rusilowati; Dyah Rini Indriyanti; Achmad Binadja
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 6 No 2 (2020): JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika), Volume 6 Issue 2, D
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/1.06206

Abstract

Mitigation education is a stage of preparedness to minimize losses due to a disaster. The purpose of this study is to develop teaching materials with the SETS (Science, Environment, Technology, and Society) approach Integrated Science subjects of solar system competencies and the earth surface structure to reduce the risk of the Mount Lokon volcanic ash disaster in North Sulawesi Province. This research uses Research and Development Methods. The subjects in this study were 30 students at SMP Kristen Credo Kolongan, Minahasa Regency. The results showed that the teaching material developed was declared valid by experts, practical was used, and effectively viewed from the cognitive aspect with an increase in the pretest score (54.5) to the posttest (92), and the affective aspects of the average score very good average (87.3) so that this teaching material is valid, practical, and effectively used in learning activities to reduce the risk of volcanic ash disaster.
THE MAGNETIC PROPERTIES MEASUREMENT OF COIL FOR GRAVITATIONAL ACCELERATION DETERMINATION Cherly Salawane; Supriyadi Supriyadi; Ronaldo Talapessy; Mirtha Yunitha Sari Risakotta
Spektra: Jurnal Fisika dan Aplikasinya Vol 5 No 2 (2020): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 5 Issue 2, August 2020
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.052.04

Abstract

The value of the gravitational acceleration of the earth above the earth’s surface depends on the position of the latitude and longitude of the earth’s surface, in other words, because the shape of the earth’s surface is not round like a ball. The magnitude of gravity is not the same everywhere on the surface of the earth. The purpose of this study is to analyze the value of the earth’s gravitational acceleration in a laboratory using a current balance with a graphical method. Fluctuations in the value of the magnetic field strength (B) and the value of the electric current strength (i) on the current balance cause the value of laboratory gravitational acceleration (glab) to vary in the transfer of electric charge (q) according to coil type. The magnitude of the earth’s gravitational acceleration value obtained in a laboratory with a current balance for each type of coil is as follows: SF-37 glab-nr=9.89 m/s2, SF-38 glab-nr=9.90 m/s2, SF-39 glab-nr=9.76 m/s2, SF-40 glab-nr=9.95 m/s2, SF-41 glab-nr=9.75 m/s2 dan SF-42 glab-nr=9.93 m/s2. The results obtained indicate that the value of the earth’s gravitational acceleration in a laboratory close to the literature value is the value of the glab-nr in the SF-37 coil type of 9.89 m/s2.
Co-Authors Achmad Binadja Ani Rusilowati Dyah Rini Indriyanti Risakotta, Mirtha Yunitha Sari Ronaldo Talapessy Supriyadi Supriyadi Supriyadi Supriyadi