Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 297 · 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 lots at once (b) test it only once (c) use the same load (d) use a new load each time
2. 2.True or false: to record every result is good testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
4. 4.True or false: to guess, do not measure is poor testing. (a) True (b) False
5. 5.True or false: to guess, do not measure is good testing. (a) False (b) True
6. 6.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
7. 7.True or false: to test it only once is poor testing. (a) False (b) True
8. 8.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) choose and draw one (d) build it with straws
9. 9.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
10. 10.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
11. 11.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) change lots at once (c) change only one thing (d) guess, do not measure
13. 13.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design C (b) design A (c) design B
15. 15.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
20. 20.True or false: to skip writing results is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
22. 22.🔍 Which is the odd one out? (a) guess, do not measure (b) use the same load (c) change only one thing (d) measure the same way
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 strongest? (a) design A (b) design C (c) design B
24. 24.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 300 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.True or false: to measure the same way is good testing. (a) False (b) True
28. 28.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
29. 29.True or false: to repeat each test is good testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) record every result (d) guess, do not measure
31. 31.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
32. 32.🔢 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
33. 33.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
34. 34.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use the same load (d) repeat each test
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.True or false: to test it only once is good testing. (a) True (b) False
37. 37.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 230 g, 50 g and 170 g. What is the mean (average) load it held, in grams?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) change lots at once
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B

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