BAB 8 KERADIOAKTIFAN
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
Standards-aligned
Wan Norlia
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tiga jenis sinaran radioaktif, P,Q dan R, dihalakan kepada kepingan kertas, kepingan aluminium dan kepingan plumbum. Antara sinaran berikut, yang manakah diwakili oleh P, Q dan R?
P : Alfa
Q : Gama
R : Beta
P : Beta
Q : Alfa
R : Gama
P : Gama
Q : Alfa
R : Beta
P : Gama
Q : Beta
R : Alfa
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jadual menunjukkan saparuh hayat bagi empat jenis cecair isotop yang memancarkan sinar gama. Isotop cecair yang manakah sesuai digunakan untuk mengesan pembekuan darah?
P
Q
R
S
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara pernyataan-pernyataan berikut yang manakah merupakan ciri sinar beta?
Zarah bercas positif
Ianya adalah satu gelombang elektromagnet
Mempunyai kuasa pengionan lebih tinggi daripada alfa
Mempunyai kuasa penembusan lebih rendah daripada gama.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radioaktif manakah yang boleh digunakan untuk menentukan usia suatu fosil?
Iodin - 131
Carbon - 14
Radium - 226
Uranium - 235
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rajah menunjukkan pesongan dua jenis pancaran radioaktif di dalam medan elektrik. Apakah jenis pancaran P dan Q?
P = zarah alfa
Q = sinaran gama
P = zarah beta
Q = sinaran gama
P = sinaran gama
Q = zarah alfa
P = sinaran gama
Q = zarah beta
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Setengah hayat suatu jenis bahan radioaktif ialah 3 hari. Berapakah masa yang perlu untuk 10 g bahan ini reput hingga baki yang tinggal1.25 g?
3 hari
6 hari
9 hari
12 hari
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antara tokoh-tokoh yang berikut, siapakah yang mula-mula menemukan sinar radioaktif?
Wilhelm Conrad Rontgen
Antoine Henri Becquerel
Marie Sklodowska Curie
Pierre Curie
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