Keradioaktifan
Quiz
•
Science
•
8th Grade
•
Hard
Amirul Zaidi
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Apakah definisi Keradioaktifan?
Pemancaran cahaya oleh bahan tertentu
Pemecahan spontan nukleus atom yang tidak stabil
Penyerapan sinar oleh bahan logam
Pergerakan elektron dalam atom
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Apakah jenis sinaran radioaktif?
Sinar Alfa, Beta, dan Gamma
Sinar Katod
Sinar Ultraviolet
Sinar-X sahaja
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Apakah unit untuk mengukur aktiviti radioaktif?
Joule (J)
Coulomb (C)
Hertz (Hz)
Becquerel (Bq)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Berapakah nilai satu curie dalam unit pereputan sesaat?
1.0 x 10¹² pereputan sesaat
3.7 x 10⁸ pereputan sesaat
3.7 x 10¹⁰ pereputan sesaat
1.0 x 10⁶ pereputan sesaat
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Apakah yang dimaksudkan dengan separuh hayat dalam konteks radioaktiviti?
Masa yang diambil oleh separuh daripada atom-atom dalam bahan radioaktif untuk mereput
Masa yang diambil oleh satu atom radioaktif untuk mereput
Masa yang diambil oleh sesuatu bahan radioaktif untuk hancur sepenuhnya
Masa yang diambil oleh satu sinaran untuk berhenti memancar
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jika separuh hayat sesuatu bahan radioaktif ialah 5 tahun, berapakah jumlah bahan radioaktif yang tinggal selepas 10 tahun, jika jumlah asal adalah 100 gram?
100 gram
25 gram
75 gram
50 gram
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Unsur radioaktif X mempunyai separuh hayat 3 jam. Berapakah masa yang diperlukan untuk bahan tersebut berkurang kepada satu perempat daripada jumlah asalnya?
3 Jam
9 Jam
6 Jam
12 Jam
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