Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 612 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) record every result (d) repeat each test
2. 2.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
3. 3.True or false: to change lots at once is good testing. (a) True (b) False
4. 4.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
5. 5.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) guess, do not measure (d) use the same load
6. 6.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
7. 7.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
8. 8.True or false: to hide a failed test is good testing. (a) False (b) True
9. 9.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
10. 10.🧪 A paper bridge was tested three times. It held 360 g, 310 g and 290 g. What is the mean (average) load it held, in grams?
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
12. 12.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) change only one thing (d) guess, do not measure
13. 13.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 270 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) change lots at once (d) record every result
20. 20.True or false: to skip writing results is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 300 g, 210 g and 330 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.True or false: to measure the same way is good testing. (a) True (b) False
25. 25.True or false: to hide a failed test is poor testing. (a) True (b) False
26. 26.True or false: to record every result is poor testing. (a) True (b) False
27. 27.True or false: to guess, do not measure is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 300 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) hide a failed test (d) change only one thing
30. 30.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 310 g. What is the mean (average) load it held, in grams?
31. 31.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
32. 32.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) hide a failed test (d) test it only once
35. 35.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 480 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas

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