
Materi OSN IPA
Authored by Emelya Putry Wulandary
Science
6th - 8th Grade
Used 3+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sebuah benda bermassa 2 kg berada pada ketinggian 10 m dari permukaan tanah. Jika percepatan gravitasi 10 m/s², berapa energi potensialnya?
200 J
100 J
20 J
2 J
Answer explanation
Ep = m × g × h = 2 kg × 10 m/s² × 10 m = 200 J.
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sebuah senar bergetar dengan frekuensi 440 Hz dan panjang gelombang 0,75 m. Berapa cepat rambat gelombangnya?
330 m/s
440 m/s
220 m/s
165 m/s
Answer explanation
v = f × λ = 440 Hz × 0,75 m = 330 m/s
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Sebuah kawat lurus panjang dialiri arus listrik. Apa yang terjadi jika kompas didekatkan ke kawat tersebut?
Jarum kompas tidak terpengaruh
Jarum kompas berputar menjauhi kawat
Jarum kompas berputar mendekati kawat
Jarum kompas berputar tegak lurus terhadap kawat
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Fenomena pasang surut air laut terutama disebabkan oleh...
Rotasi bumi
Revolusi bumi
Gaya gravitasi bulan
Gaya gravitasi matahari
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Mengapa saat memegang sendok logam yang dimasukkan ke dalam teh panas tangan terasa panas?
Kalor berpindah dari tangan ke sendok
Kalor berpindah dari sendok ke tangan melalui konveksi
Kalor berpindah dari teh ke tangan langsung
Kalor berpindah melalui konduksi dari teh ke tangan melalui sendok
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Sebuah mobil bergerak dengan kecepatan 60 km/jam lalu dipercepat menjadi 90 km/jam dalam 5 detik. Percepatan rata-ratanya adalah...
6 m/s²
2 m/s²
1.67 m/s²
3 m/s²
Answer explanation
Percepatan = Δv / t = (25 m/s - 16.67 m/s) / 5 = 8.33 / 5 = ~1.67 m/s²
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Perubahan energi yang terjadi pada kipas angin yang dinyalakan adalah...
Energi listrik → energi bunyi
Energi listrik → energi gerak
Energi gerak → energi listrik
Energi panas → energi gerak
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