Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 910 · 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.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
4. 4.True or false: to measure the same way is poor testing. (a) False (b) True
5. 5.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 200 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
7. 7.True or false: to use a new load each time is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) skip writing results (d) use a new load each time
13. 13.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) guess, do not measure (d) use the same load
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
17. 17.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
19. 19.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
20. 20.🧪 A paper bridge was tested three times. It held 300 g, 200 g and 100 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
22. 22.True or false: to test it only once is poor testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
25. 25.True or false: to record every result is good testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design C (b) design A (c) design B
28. 28.True or false: to repeat each test is good testing. (a) False (b) True
29. 29.True or false: to change only one thing is poor testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to hide a failed test is good testing. (a) False (b) True
32. 32.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
33. 33.True or false: to measure the same way is good testing. (a) True (b) False
34. 34.🔢 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
35. 35.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to change only one thing is good testing. (a) False (b) True
37. 37.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
38. 38.🧪 A paper bridge was tested three times. It held 320 g, 150 g and 220 g. What is the mean (average) load it held, in grams?
39. 39.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 210 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one

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