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Radioactivity

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Decay - Nucleus - Isotope
1 What is a Decay? Answer
2 During Radioactive Decay, what can a Nucleus Emit? Answer
3 Is Radioactive Decay a Random Process? Answer
4 What are the Three Types of Radioactivity called? Answer
5 What does the Nucleus of an Atom contain? Answer
6 What is the Atomic Number? Answer
7 What is the Mass Number? Answer
8 What is an Isotope? Answer
9 How can a Nucleus be Unstable? Answer
10 How can an Unstable Nucleus change into a More Stable form? Answer
11 What is a Radioactive Isotope? Answer
12 What is a Radionuclide? Answer


Alpha Particles
13 What does an Alpha Particle consist of? Answer
14 How is an Alpha Particle written? Answer
15 Does an Alpha Particle have More Mass than a Beta Particle? Answer
16 Does an Alpha Particle have More Penetrating Ability than a Beta Particle? Answer
17 Is an Alpha Particle More Ionising than a Gamma Ray? Answer
18 What happens to the Mass Number when an Alpha Particle is emitted? Answer
19 What happens to the Atomic Number when an Alpha Particle is emitted? Answer
20 What is a Decay Series? Answer


Beta Particles
21 What is a Beta Particle? Answer
22 Where does a Beta Particle come from? Answer
23 What is the Charge on a Beta Particle? Answer
24 How is a Beta Particle written? Answer
25 Does a Beta Particle have More Mass than an Alpha Particle? Answer
26 Does a Beta Particle have More Penetrating Ability than an Alpha Particle? Answer
27 Is a Beta Particle More Ionising than a Gamma Ray? Answer
28 What happens to the Mass Number when a Beta Particle is emitted? Answer
29 What happens to the Atomic Number when a Beta Particle is emitted? Answer
30 What does a Neutron in the Nucleus become when a Beta Particle is emitted? Answer


Gamma Rays
31 What is a Gamma Ray? Answer
32 What is the Charge on a Gamma Ray? Answer
33 How is a Gamma Ray written? Answer
34 Does a Gamma Ray have More Mass than an Alpha Particle? Answer
35 Does a Gamma Ray have More Penetrating Ability than an Alpha Particle? Answer
36 Is a Gamma Ray More Ionising than a Beta Particle? Answer
37 What happens to the Mass Number when a Gamma Ray is emitted? Answer
38 What happens to the Atomic Number when a Gamma Ray is emitted? Answer
39 What happens to the Nucleus when a Gamma Ray is emitted? Answer


Penetrating Ability - Ionising Ability - Detection - Background Count
40 What is Penetrating Ability? Answer
41 What does Penetrating Ability depend on? Answer
42 What type of Radioactivity will be Stopped by Paper? Answer
43 What type of Radioactivity will be Stopped by Air? Answer
44 What type of Radioactivity will be Stopped by Aluminium? Answer
45 What types of Radioactivity are called Ionising Radiation? Answer
46 How can Radioactivity form Ions? Answer
47 What does the Ability of Radioactivity to form Ions depend on? Answer
48 What does Radioactivity do to Photographic Film? Answer
49 What is a Film Badge? Answer
50 What Windows are used in a Film Badge? Answer
51 What does a Geiger-Muller Tube Detect? Answer
52 What Gas is used to fill a Geiger-Muller Tube? Answer
53 What is a Becquerel? Answer
54 What is Background Radiation? Answer
55 Name two Places where Background Radiation comes from. Answer
56 Why is the Background Count not Constant? Answer
57 How can you get an Accurate Reading for the Background Count? Answer


Half-life - Radiodating - Carbon Dating
58 What is a Definition of Half-life? Answer
59 What does it mean if Nuclei are Stable? Answer
60 Can a Half-life be Less than one Second? Answer
61 Can a Half-life be More than one Billion Years? Answer
62 How can Half-life be measured from a Graph of Count Rate against Time? Answer
63 If a Count Rate is 544 Bq now, what is it after 15 Hrs if the Half-life is 3 Hrs? Answer
64 If a Count Rate is 2016 Bq now, and 63 after 35 Days, what is the Half-life? Answer
65 What is Radiodating? Answer
66 How old is a Rock with 1 K-40 (Half-life 1·3 Billion Years) to 3 Ar-40? Answer
67 What is Carbon Dating? Answer
68 Where does Carbon-14 in the Environment come from? Answer
69 What are Archaeological Specimens? Answer
70 Name two Things which can be Dated using Carbon Dating. Answer
71 Name one Thing which can not be Dated using Carbon Dating. Answer


Thickness Control - Smoke Detector - Tracer
72 What type of Radioactivity would be used in the making of Aluminium Foil? Answer
73 Would the Radioactivity used to make Aluminium Foil have a Long Half-life? Answer
74 What type of Radioactivity would be used in a Smoke Detector? Answer
75 How does the presence of Smoke make the Detector set off the Alarm? Answer
76 What is a Radioactive Tracer? Answer
77 What type of Radioactivity could Detect a Leak in an Underground Pipe? Answer
78 Would the Radioactivity used to Detect a Leak have a Long Half-life? Answer
79 What type of Radioactivity could be Injected into Blood? Answer
80 Would the Radioactivity Injected into Blood have a Long Half-life? Answer


Sterilisation - Cancer - Safety Precautions
81 What is Sterilisation? Answer
82 What type of Radioactivity would be used in Sterilisation? Answer
83 Give one Example of the use of Radioactivity for Sterilisation. Answer
84 What is a Mutation? Answer
85 How can a Mutation lead to Cancer? Answer
86 What does Exposure mean? Answer
87 What does Intensity mean? Answer
88 What is External Radiation? Answer
89 Are all forms of External Radiation Harmful? Answer
90 Which form of External Radiation is Least Harmful? Answer
91 What is Internal Radiation? Answer
92 Are all forms of Internal Radiation Harmful? Answer
93 Which form of Internal Radiation is Least Harmful? Answer
94 Give two Safety Precautions used when handling a Radioactive Source. Answer


Rutherford and Marsden - Fission - Nuclear Power
95 What was the Plum Pudding Model? Answer
96 What did Rutherford and Marsden fire Alpha Particles at? Answer
97 Did some of the Alpha Particles go straight through? Answer
98 Did some of the Alpha Particles change direction? Answer
99 Did some of the Alpha Particles bounce back towards the Source? Answer
100 What takes up Most of the Space of an Atom? Answer
101 Where is Most of the Mass of an Atom? Answer
102 What is Fission? Answer
103 Does Fission of a Nucleus release a Large Amount of Energy? Answer
104 Where does this Energy come from? Answer
105 What is this Energy used for in a Nuclear Power Station? Answer
106 What is a Chain Reaction? Answer
107 How is the Speed of a Chain Reaction controlled? Answer
108 Give two Advantages of Nuclear Power. Answer
109 Give two Disadvantages of Nuclear Power. Answer

 

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