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WorksheetsC8 Radioactivity Part1 PT3
Total questions: 20
Worksheet time: 3570secs
A German physicist who discovered X-ray accidentally and took X-ray photographs of his wife's hand. Who is the name of this scientist?
Wilhelm Röentgen
Henri Becquerel
Marie and Pierre Curie
A French physicist who discovered radioactivity and uranium which radiates rays that blacken the photographic plate even in dark conditions.
Wilhem Röentgen
Henri Becquerel
Marie and Pierre Curie
Albert Einstein
A couple detected radioactive emission through their ionising power and extracted the polonium and radium (radioactivity from) the uranium ore.
Wilhelm Röntgen
Henri Becquerel
Marie and Pierre Curie
Albert Einstein
Based on the diagram of radioactivity. Name the process occur.
Radioactive decay
Radioactive breakdown
Radioactive splitting
What is the first measurement of unit of radioactivity introduced by Marie and Pierre Curie, i.e. the unit of the rate of decay of unstable nuclei?
Currie
Curie
Currier
What is the first symbol of radioactivity to introduced by Marie and Pierre Curie?
Ci
C
Cu
Bq
What is the S.I. unit and its symbol for radioactivity?
Becquerel
Curie
Currie
Currier
He is referred to as China's "father of
the atomic bomb".
He was a Chinese nuclear physicist.
What is the name of this scientist?
Qian Sanqiang (钱三强)
Yumin (于敏)
Yang Chen-Ning (杨振宁)
Wu Chien-Shiung 吳健雄
He is a Chinese physicist and father of China’s hydrogen bomb. China awarded him the “Two Bombs, One
Satellite Achievement” medal. What is name of this scientist?
Wu Chien-Shiung (吳健雄)
Yu Min (于敏)
Qian Sanqiang (钱三强)
Deng Jiaxian (邓稼先)
1 Ci = ? Bq
37 000 000 000 Bq
3 700 000 000 Bq
370 000 000 Bq
37 000 000 Bq
Which of the following has the characteristics below?
Negatively charged particle
It has medium ionising effect in air
it has medium penetration power.
(can be blocked by aluminium sheet)
alpha radiation
beta radiation
gamma ray
radio waves
Which of the following has the characteristics stated below?
positively charged particle
it has highest ionising effect
it has lowest penetrating effect
(can be blocked by paper)
alpha radiation
beta radiation
gamma ray
microwaves
Which of the following has the characteristics stated below?
it has no charge/ neutral in nature
it has lowest ionising effect in air
it has highest penetrating power
(can be blocked by lead/ concrete)
alpha radiation
beta radiation
gamma ray
infrared radiation
Which of the following is the S.I. unit for radioactivity?
Kelvin
Becquerel
Hertz
Watt
Curie
Cobalt 60 emit only _______________.
alpha particles
beta particles
gamma ray
Strontium-90 emit only __________________.
Strontium-90 is used to detect the thickness of paper/ cardboard.
alpha particles
beta particles
gamma ray
I don't know
Radium-227 emit _________________
alpha particles
beta particles
gamma rays
alpha particles, beta particles & gamma rays
alpha particles & beta particles
Diagram shows the trace formed on the cloud chamber.
Thick and straight tracks seen.
What kind of radiation detected?
alpha radiation
beta radiation
gamma radiation
Diagram shows the trace formed on the cloud chamber.
The twisted track seen.
What type of radiation detected?
alpha radiation
beta radiation
gamma radiation
Diagram shows the trace formed on the cloud chamber.
The scattered track seen.
What type of radiation detected?
alpha radiation
beta radiation
gamma radiation
