Debate Worksheet: Strong and Weak Evidence

Debate lesson 3: Strong and weak evidence · Set 2 · 40 questions

Debater's tip (Relevant, specific, reliable): Relevant: does it talk about the topic of the motion? Specific: does it say exactly who, what, where or how many? “30 of 40 students” beats “lots of students”. Reliable: can we trust where it came from? Records, textbooks and official bodies beat rumours and unsigned posts.

1. 1.🔎 Which source is most reliable in a debate on saving water? (a) a guess (b) an unsigned poster (c) the city water board (d) a chat forward
2. 2.🔎 Strong or weak evidence: a story you are not sure about? (a) strong evidence (b) weak evidence
3. 3.🔎 Why is this weak evidence? “Studies show things.” (a) not reliable (b) not specific (c) not relevant
4. 4.🔎 Before using a number in a debate, you should… (a) check where it came from (b) make it bigger (c) round it to 100 (d) hide the source
5. 5.🔎 Strong or weak evidence: the attendance register for the whole year? (a) strong evidence (b) weak evidence
6. 6.True or false: “A website with no name says so.” — this is weak because it is not relevant to the topic. (a) True (b) False
7. 7.True or false: a rumour forwarded in a chat group is weak evidence. (a) False (b) True
8. 8.True or false: an unsigned post with no source is weak evidence. (a) True (b) False
9. 9.🔎 Why is this weak evidence? In a debate on homework: “Mount Everest is very tall.” (a) not reliable (b) not specific (c) not relevant
10. 10.🔎 Why is this weak evidence? “My neighbour heard it from someone.” (a) not relevant (b) not specific (c) not reliable
11. 11.🔎 Why is this weak evidence? In a debate on saving water: “My favourite colour is green.” (a) not relevant (b) not specific (c) not reliable
12. 12.True or false: an unsigned post with no source is strong evidence. (a) False (b) True
13. 13.🔎 Why is this weak evidence? “A forwarded message says so.” (a) not specific (b) not reliable (c) not relevant
14. 14.🔎 Strong or weak evidence: “My cousin said so.”? (a) strong evidence (b) weak evidence
15. 15.True or false: a survey of 300 students in our school is weak evidence. (a) False (b) True
16. 16.True or false: a survey of 300 students in our school is strong evidence. (a) False (b) True
17. 17.True or false: measured results from our class experiment is weak evidence. (a) False (b) True
18. 18.True or false: “I think I dreamt it.” — this is weak because its source is not reliable. (a) False (b) True
19. 19.True or false: In a debate on saving water: “My favourite colour is green.” — this is weak because its source is not reliable. (a) True (b) False
20. 20.🔎 Strong or weak evidence: figures from the city water board? (a) strong evidence (b) weak evidence
21. 21.🔎 Which is more specific? (a) lots of students (b) 30 of 40 students
22. 22.True or false: measured results from our class experiment is strong evidence. (a) False (b) True
23. 23.True or false: a fact from our science textbook is weak evidence. (a) False (b) True
24. 24.🔎 Why is this weak evidence? “A lot of water gets wasted somewhere.” (a) not relevant (b) not specific (c) not reliable
25. 25.🔎 Why is this weak evidence? “I think I dreamt it.” (a) not relevant (b) not reliable (c) not specific
26. 26.🔎 Why is this weak evidence? “Some people say it helps somehow.” (a) not relevant (b) not specific (c) not reliable
27. 27.True or false: “My cousin said so.” is weak evidence. (a) False (b) True
28. 28.🔎 Strong or weak evidence: a fact from our science textbook? (a) weak evidence (b) strong evidence
29. 29.True or false: “My cousin said so.” is strong evidence. (a) True (b) False
30. 30.🔎 Strong or weak evidence: an unsigned post with no source? (a) weak evidence (b) strong evidence
31. 31.🔎 Strong or weak evidence: a rumour forwarded in a chat group? (a) strong evidence (b) weak evidence
32. 32.True or false: the school nurse’s record of sick days is strong evidence. (a) True (b) False
33. 33.🔎 Strong or weak evidence: a survey of 300 students in our school? (a) weak evidence (b) strong evidence
34. 34.🔎 Why is this weak evidence? “Lots of students like it.” (a) not reliable (b) not specific (c) not relevant
35. 35.True or false: one friend’s guess is strong evidence. (a) False (b) True
36. 36.True or false: “A lot of water gets wasted somewhere.” — this is weak because it is not relevant to the topic. (a) False (b) True
37. 37.True or false: “It is good for many reasons.” — this is weak because its source is not reliable. (a) True (b) False
38. 38.🔎 What makes evidence strong? (a) funny and short (b) old and vague (c) relevant and reliable (d) loud and long
39. 39.🔎 Strong or weak evidence: measured results from our class experiment? (a) strong evidence (b) weak evidence
40. 40.🔎 Why is this weak evidence? “I saw it on a random poster once.” (a) not reliable (b) not relevant (c) not specific

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