Radioactivity Quiz

Radioactivity Quiz

3rd Grade

16 Qs

quiz-placeholder

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Radioactivity Quiz

Radioactivity Quiz

Assessment

Quiz

Science

3rd Grade

Easy

Created by

Rui Chung

Used 2+ times

FREE Resource

16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who discovered X-ray accidentally in 1895?

Marie Curie

Wilhelm Roentgen

Pierre Curie

Henri Becquerel

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Henri Becquerel discover in 1896?

X-ray

Polonium and Radium

Uranium

Proof of radioactivity

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the S.I unit for radioactivity?

Roentgen

Sievert

Becquerel

Curie

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the half-life of a radioactive substance?

Time taken for the number of nuclei to decay to half of its original number

Time taken for the number of nuclei to decay to one-fourth of its original number

Time taken for the number of nuclei to decay to one-third of its original number

Time taken for the number of nuclei to decay to one-tenth of its original number

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a radioactive substance had a half life of 5 days, what fraction would be left after 20 days?

1/2

1/4

1/8

1/16

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of radiation has the highest ionising power?

Beta particles

Gamma ray

Alpha particles

X-ray

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of dose rate measurement for background radiation?

Curie

Joule

Sievert

Watt

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