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ED87a-DiscoveryOfAtom.DMS
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1993-02-24
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Who discovered radioactivity?
a. Marie Curie
b. Henri Becquerel
c. Ernest Rutherford
d. Joseph Johnson
2
What was the name of the atomic bomb dropped on Hiroshima?
a. Fat Boy
b. Big Boy
c. Little Boy
d. Heavy Boy
3
What particle exists in the nucleus and has a positive charge?
a. Proton
b. Electron
c. Neutron
d. Positron
1
What is the opposite particle to an electron?
a. Proton
b. Photon
c. Positron
d. Psyion
3
What device did Francis Aston use to discover isotopes?
a. Geiger Muller tube
b. Tockamak
c. Synclitron
d. Mass Spectometer
4
What did the 'cathode rays' consist of in Johnson's experiement?
a. Positrons
b. Alpha particles
c. Electrons
d. cathode particles
3
What made Johnson think that all electrons were the same?
a. The cathode rays stayed the same
b. They had the same charge
c. They came from the negative cathode
d. They travelled at the same speed
1
What particles did Rutherford discover?
a. Beta particles
b. Alpha particles
c. Protons
d. All of the above
4
What did Chadwick discover in 1932?
a. Protons
b. Nuclear fission
c. Neutrons
d. Gamma radiation
3
What makes up the atomic number?
a. The number of protons and neutrons
b. The number of protons
c. The number of neutrons
d. The number of electrons
2
What makes up the atomic mass?
a. The number of neutrons
b. The number of electrons
c. The number of atoms
d. The number of protons and neutrons
4
What makes a stable atomic structure?
a. The same number of protons as neutrons
b. Covalent bonding
c. A complete electron shell
d. An overall positive charge to the atom
3
What is Group 1 in the periodic table?
a. The alkali metals
b. The Halogens
c. The Radioactive isotopes
d. The non-metals
1
What is Group 7 in the periodic table?
a. The Noble gases
b. The Halogens
c. The Semiconductors
d. The Alkaline earth metals
2
What is an ion?
a. A positively charged particle
b. A radioactive particle
c. A charged atom
d. An atom with more neutrons than normal
3
This bonding occurs where electrons are transfered and is called
a. Covalent bonding
b. Ionic bonding
c. Radioactive bonding
d. Isotopic bonding
2
Covalent bonding is where?
a. Electrons are shared
b. Neutrons change into protons
c. Isotopes combine together
d. Electrovalent bonding occurs
1
The element Mendelvium was named after?
a. The discoverer of fusion
b. A composer
c. The discoverer of heredity
d. The creator of the periodic table
4
Otto Hahn discovered nuclear fission which is where?
a. Atoms combine at very high temperatures
b. Atoms repel each other when charged
c. Atoms split apart
d. Atoms detonate to create a nuclear explosion
3
What important discovery did Niels Bohr make?
a. The atomic bomb could be made from plutonium
b. nuclear fusion
c. Only a small amount of uranium would undergo fission
d. 98% of uranium could be used to make plutonium
3
Who discovered that U238 could be used to make plutonium?
a. Enrico Femri
b. Carl Fredrich von Weizsacker
c. Werner Heisenberg
d. Otto Hahn
2
Where was the first chain reaction achieved?
a. In a laboratory
b. The New Mexico desert
c. In a squash court
d. At Los Alamos
3
Where did Roosevelt, Churchill and Starlin meet in 1945?
a. Potsdam
b. Los Alamos
c. Tannenberg
d. Yalta
4
What type of device was detonated on 15th June 1945?
a. Uranium 235 bomb
b. Uranium 238 bomb
c. Plutonium bomb
d. Thermonuclear bomb
3
What size was the bomb dropped on Hiroshima?
a. 20 kiloton
b. 50 kiloton
c. 10 megaton
d. 50 megaton
1
How many people were killed at Hiroshima?
a. 7,000
b. 20,000
c. 70,000
d. 150,000
3
Isotopes are the same atoms with?
a. A different number of electrons
b. A different number of neutrons
c. Different charges
d. A different atomic number
2
What isotope is used for dating old objects?
a. Uranium 235
b. Carbon 12
c. Carbon 14
d. Cobalt 60
3
What radioactive element did the Curies find in pitcheblende?
a. Plutonium
b. Radium
c. Neptunium
d. Curium
2
Why do elements emit radioactivity?
a. In an attempt to become stable
b. They have too many electrons
c. They undergo nuclear fission
d. They are isotopes of a stable form of the same element
1
Why do some radioactive elements emit alpha particles?
a. They have too much energy
b. They have an atomc number less than 83
c. They want to lose mass
d. They want to lose neutrons
3
Beta particles are?
1. Positrons
b. helium nuclei
c. electromagnetic rays
d. electrons
4
Gamma radiation can be stopped by?
a. Thick lead sheet
b. thin paper
c. thin gold foil
d. thin aluminum sheet
1
Alpha and beta particles change the atom because?
a. They change it's mass
b. They change the number of protons
c. They change neutrons to electrons
d. They cause gamma radiation
2
Radioactive half-life is?
a. The time taken for atoms to halve in weight
b. The time taken for atoms to lose half their electons
c. The time taken for atoms to half their density
d. The time taken for half the atoms to decay
4
What is the critical size of a sphere of uranium 235?
a. 1.5 inches approx.
b. 20.5 inches approx.
c. 6.5 inches approx.
d. 59 inches approx.
3
What is the name of the isotope of hydrogen with 2 neutrons?
a. Natural hydrogen
b. deuterium
c. tritium
d. lithium
3
What is a hydrogen device also known as?
a. A theromnuclear device
b. A fisson device
c. A 'dirty' device
d. A fusion-fission device
1
Why is a 'dirty' bomb so called?
a. It kills only lifeforms and leaves buildings standing
b. It produces masses of fallout
c. There are masses of waste products from it's manufacture
d. It's size is only limited by it's method of delivery
2
Weight for weight how much more power comes from an H bomb?
a. 10 times
b. 50 times
c. 5 times
d. 2.5 times
4
When did the first thermonuclear detonation take place?
a. 15th June 1945
b. 6th August 1945
c. 31st October 1952
d. 13th May 1958
3
What temperature is needed for a fusion reaction to occur?
a. 100 million K
b. 70 million K
c. 20 million K
d. 2.5 million K
1
What is the neutron bomb also called?
a. Fusion-fission-fusion weapon
b. Thermonuclear weapon
c. Enhanced radiation weapon
d. Tokamak weapon
3