sains tingkatan 3: bab 8
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Hard
NORAINI Moe
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18 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
1. Terdapat dua jenis sinaran iaitu__________ dan __________
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
berikut ialah contoh sinaran mengion kecuali
A. jaringan kuasa
B. ultraunggu
C. sinar -X
D. sinaran gamma
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
contoh sinaran tidak mengion ialah
A. jaringan kuasa
B. sinar-X
C. sinaran gamma
D. ultraunggu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Siapakah ahli sains yang menemukan sinar-X yang boleh menembusi tisu manusia?
Antoine Henri Becquerel
Wilhelm Conrad Rontgen
Ernest Rutherford
Marie Sklodowska Curie
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah maksud bahan radioaktif?
Unsur yang mempunyai nukleus yang stabil.
Unsur yang mempunyai nukleus yang tidak stabil.
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Tuliskan benar bagi pernyataan yang betul tentang keradioaktifan.
Keradioaktifan diukur dalam unit Becquerel (Bq) dan unit Curie (Ci)
Pereputan bahan radioaktif akan berlaku apabila ia bertindak balas dengan oksigen.
Keradioaktifan adalah proses pemancaran sinar radioaktif secara spontan.
Pereputan dipengaruhi oleh suhu, tekanan dan kelembapan udara.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Definisikan konsep separuh hayat pereputan radioaktif.
Bilangan nukleus dalam bahan radioaktif adalah sama sebelum dan selepas mereput.
Masa yang diambil oleh atom-atom radioaktif untuk tidak mereput.
Masa yang diambil oleh atom-atom radioaktif untuk mereput kepada separuh daripada bilangan asalnya.
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