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Sains PT3 | Keradioaktifan (Radioactivity) | Part 1

Authored by zawani fasttrack

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9th Grade

Used 15+ times

Sains PT3 | Keradioaktifan (Radioactivity) | Part 1
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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Apakah unit S.I. bagi keradioaktifan?

What is the S.I. unit for radioactivity?

Becquerel

Curie

Pereputan per saat

Decay/second

saat

second

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pilih maksud KERADIOAKTIFAN yang betul.

Choose the CORRECT definition of Radioactivity.

Proses pereputan secara spontan bagi nukleus yang stabil dengan memancarkan sinaran radioaktif

A random and spontaneous decay process of a stable nucleus by emitting radioactive radiation.

Proses pereputan secara spontan bagi nukleus yang tidak stabil dengan memancarkan sinaran radioaktif

A random and spontaneous decay process of an unstable nucleus by emitting radioactive radiation.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Separuh hayat iodin-131 ialah 8 hari. Suatu sampel radioaktif mengandungi 64g iodin-131. Tentukan jisim iodin yang tinggal selepas 24 hari.


The half life of Iodine-131 is 8 days. A radioactive sample contain 64 g of Iodine-131. Determine the mass of the iodine left after 24 days.

4 g

16 g

32 g

8 g

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Apakah maksud separuh hayat?

What is the meaning of half-life?

Tempoh masa yang diambil untuk bilangan nukleus yang belum mereput berkurang menjadi setengah daripada nilai asalnya.

The time taken for the number of undecayed nuclei to be

reduced to half of its original value

Tempoh masa yang diambil untuk bilangan nukleus yang sudah mereput berkurang menjadi setengah daripada nilai asalnya.

The time taken for the number of decayed nuclei to be

reduced to half of its original value

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Apakah kuantiti yang diukur dalam unit keradioaktifan?

What is the quantity measured in radioactivity unit?

Kadar pereputan nukleus unsur radioaktif

The decay rate of an unstable nucleus.

Kadar pereputan proton.

The decay rate of proton.

Kadar pereputan neutron.

The decay rate of neutron.

Kadar pereputan electron.

The decay rate of electron.

6.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Namakan dua unit keradioaktifan.

Name two units of radioactivity.

curie (Ci)

becquerel (Bq)

gram per saat (g/s)

watt (W)

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Antara berikut, yang manakah sinaran radioaktif?

Which of the following are radioactive radiation?

Sinar Alfa

Alpha Ray

Sinar Beta

Beta Ray

Sinar Mikro

Micro Ray

Sinar Gama

Gamma Ray

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