Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 260 · 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.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) choose and draw one
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) guess, do not measure (c) use a new load each time (d) change lots at once
5. 5.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change only one thing (d) measure the same way
6. 6.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use a new load each time (d) measure the same way
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design C (b) design B (c) design A
12. 12.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) load it with coins
16. 16.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.True or false: to repeat each test is good testing. (a) False (b) True
20. 20.True or false: to change only one thing is poor testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
22. 22.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 190 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
25. 25.🔢 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
26. 26.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
27. 27.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) change lots at once (d) use a new load each time
28. 28.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
30. 30.True or false: to record every result is poor testing. (a) True (b) False
31. 31.True or false: to repeat each test is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
33. 33.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) to get reliable results (d) it looks busy
34. 34.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 260 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 260 g. What is the mean (average) load it held, in grams?
36. 36.True or false: to hide a failed test is poor testing. (a) False (b) True
37. 37.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing

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