WorksheetsSains-Nuklear
Total questions: 44
Worksheet time: 36mins
Name
Class
Date
1.
Pernyataan manakah yang benar mengenai bahan radioaktif?
a)
Suatu tindak balas berbalik
b)
Mempunyai nombor nukleon yang kecil
c)
Mempunyai nukleus yang tidak stabil
d)
Reaktif terhadap air
2.
Sinaran radioaktif yang manakah bercas negatif?
a)
Alfa
b)
Beta
c)
Gama
3.
Sinaran radioaktif yang manakah dapat disekat oleh sekeping kertas?
a)
alfa
b)
beta
c)
gama
4.
Kotak yang digunakan untuk menyimpan bahan radioaktif diperbuat daripada_______
a)
Kaca
b)
Grafit
c)
Aluminium
d)
Plumbum
5.
Sinaran radioaktif yang mempunyai kuasa penembusan yang paling tinggi ialah______
a)
Alfa
b)
Beta
c)
Gama
6.
Antara zarah yang berikut, yang manakah digunakan untuk membedil uranium-235 dalam proses pembelahan nuklear?
a)
Proton
b)
Alfa
c)
Neutron
d)
Elektron
7.
Apakah kesan sinaran radioaktif ke atas kesihatan?
a)
Kencing manis
b)
Anoreksia
c)
Strok
d)
Kanser
8.
Apakah bahan radioaktif yang sesuai digunakan untuk menganggarkan usia fosil?
a)
Uranium-235
b)
Kobalt-60
c)
Iodin-131
d)
Karbon-14
9.
Bahan radioaktif yang digunakan untuk rawatan kanser ialah_______
a)
Uranium-235
b)
Iodin-131
c)
Kobalt-60
d)
Karbon-12
10.
Di manakah pelakuran nuklear berlaku secara semula jadi?
a)
Awan
b)
Bumi
c)
Matahari
d)
Lautan
11.
Kaedah yang manakah paling sesuai untuk menyimpan bahan radioaktif?
a)
Simpan di dalam bekas plumbum yang tebal
b)
Simpan di dalam botol gelap
c)
Simpan di dalam minyak parafin
d)
Simpan di dalam bekas keluli
12.
Antara berikut, yang manakah BUKAN kegunaan bahan radioaktif?
a)
Rawatan perubatan
b)
Pengawetan makanan
c)
Kawalan pencemaran
d)
Pentarikhan radioaktif
13.
_______digunakan untuk menjana tenaga elektrik daripada tenaga nuklear.
a)
Karbon
b)
Uranium
c)
Kobalt
d)
Helium
14.
Sinaran gama digunakan untuk menentukan ketebalan dinding paip keluli kerana sinran gama_____
a)
bercas tinggi
b)
adalah neutral
c)
kuasa pengionan yang tinggi
d)
kuasa penembusan yang tinggi
15.
Dalam proses penjanaan tenaga elektrik daripada tenaga nuklear, komponen yang manakah digunakan untuk menukarkan tenaga nuklear kepada tenaga haba?
a)
penjana
b)
turbin stim
c)
reaktor
d)
transformer
16.
apakah maksud tenaga?
a)
tenaga ialah daya
b)
tenaga bergerak
c)
tenaga ialah keupayaan melakukan kerja
17.
tenaga suria diperoleh daripada
a)
bulan
b)
bintang
c)
matahari
18.
objek yang bergerak mempunyai tenaga.....
a)
tenaga haba
b)
tenaga kinetik
c)
tenaga elektrik
d)
tenaga kinetik
19.
matahari membekalkan.......
a)
tenaga elektrik
b)
tenaga cahaya dan haba
c)
tenaga angin
20.
bahan organik daripada tumbuhan dan haiwan yang membekalkan tenaga apabila dibakar ialah tenaga.....
a)
matahari
b)
angin
c)
biojisim
21.
apakah contoh bahan api fosil?
a)
kayu api, sampah organik
b)
panel suria
c)
petroleum dan gas asli,arang batu
22.
tenaga apakah yang membekalkan tenaga kepada manusia dan haiwan?
a)
makanan
b)
biojisim
c)
nuklear
23.
apakah kegunaan tenaga angin?
a)
menggerakkan turbin
b)
menggerakkan kapal layar
c)
menggerakkan kenderaan
24.
di manakah tenaga daripada sumber air dihasilkan?
a)
laut
b)
loji jana kuasa nuklear
c)
empangan jana kuasa
25.
apakah kegunaan sumber tenaga di atas?
a)
membekalkan tenaga haba
b)
membekalkan tenaga angin
c)
membekalkan tenaga elektrik
26.
Nuclear power uses ____ for fuel.
a)
steel
b)
coal
c)
uranium
d)
hydrogen
27.
Nuclear energy uses _____ to turn turbines to power a generator.
a)
wind
b)
water
c)
steam
d)
solar
28.
What do neutron moderators or control rods do in a nuclear reactor?
a)
Regulate the rate of reaction by absorbing and slowing neutrons
b)
Produce electricity
c)
Produce neutrons to increase the rate of reaction
d)
Reduce heat produced by the uranium rods
29.
How is the heat generated by the reactor core of a nuclear power plant used to provide power to buildings?
a)
It is used directly to heat homes and offices
b)
It generates steam, which turns a turbine, powering a generator
c)
It generates steam, which is then condensed back to water. This process produces energy
d)
All of the above
30.
_________ happens naturally due to an unstable nucleus.
a)
fission
b)
fusion
c)
radioactive decay
d)
K-capture
31.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
decay
d)
gamma radiation
32.
What is a chain reaction?
a)
When electrons are emitted causing electricity
b)
When a nuclear fission reaction occurs, the protons emitted can strike other nuclei in the sample, and cause them to split
c)
When a nuclear fission reaction occurs, the neutrons emitted can strike other nuclei in the sample, and cause them to split
d)
When a nuclear fission reaction occurs, the electrons emitted can strike other nuclei in the sample, and cause them to split
33.
What is a benefit of nuclear fission?
a)
The ability to absorb energy
b)
The ability to release tremendous amounts of energy
c)
The ability to produce more energy than nuclear fusion
d)
There are no beneficial aspects of nuclear fission
34.
An example of an uncontrolled fission reaction is _______________
a)
Nuclear power plants
b)
Radio active decay
c)
Atomic Bomb
d)
On the surface of the sun
35.
What is an atom that has an unstable nucleus and undergoes radioactive decay?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
36.
What is the penetrating rays and particles emitted by a radioactive source?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
37.
What is the process by which nuclei emit particles and rays?
a)
Radiation
b)
Radioactivity
c)
Radioisotopes
38.
This process requires a radioactive fuel source, usually Uranium 235 or Polonium 239
a)
Fusion
b)
Chain Reaction
c)
Fission
39.
Produces temperatures in excess of 40,000,000 degrees celsius.
a)
Chain Reaction
b)
Fission
c)
Fusion
40.
When small nuclei combine to produce a nucleus of greater mass
a)
Fusion
b)
Fission
c)
Chain Reaction
41.
The splitting of a nucleus into smaller fragments accompanied by the release of neutrons and a large amount of energy
a)
Fusion
b)
Fission
c)
Chain Reaction
42.
It is the energy producing reaction that takes place in our sun and other stars.
a)
Fission
b)
Chain Reaction
c)
Fusion
43.
When neutrons produced react with other fissionable atoms, continuing the fission.
a)
Fission
b)
Chain Reaction
c)
Fusion
44.
The energy produced can be controlled and harnessed to produced electricity.
a)
Chain Reaction
b)
Fission
c)
Fusion
100 %
