Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 618 · 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.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
2. 2.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
4. 4.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 380 g. What is the mean (average) load it held, in grams?
5. 5.🔍 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
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🔍 Which is the odd one out? (a) skip writing results (b) change only one thing (c) repeat each test (d) use the same load
8. 8.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 220 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 330 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
13. 13.True or false: to hide a failed test is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 240 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
15. 15.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
16. 16.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) hide a failed test (d) repeat each test
17. 17.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
19. 19.🧪 A paper bridge was tested three times. It held 390 g, 210 g and 270 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
21. 21.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
22. 22.True or false: to test it only once is good testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
24. 24.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Why repeat a test three times? (a) to get reliable results (b) to use more paper (c) the first is wrong (d) it looks busy
27. 27.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
29. 29.True or false: to measure the same way is good testing. (a) True (b) False
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) test it only once (d) hide a failed test
32. 32.True or false: to test it only once is poor testing. (a) True (b) False
33. 33.True or false: to change lots at once is good testing. (a) False (b) True
34. 34.True or false: to repeat each test is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 150 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the weakest? (a) design B (b) design C (c) design A
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?

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