Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 67 · 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.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.True or false: to record every result is good testing. (a) False (b) True
4. 4.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
5. 5.True or false: to measure the same way is poor testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design C (b) design B (c) design A
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
9. 9.True or false: to skip writing results is good testing. (a) True (b) False
10. 10.True or false: to test it only once is good testing. (a) True (b) False
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
12. 12.🔢 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
13. 13.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design C (b) design A (c) design B
15. 15.True or false: to change lots at once is good testing. (a) True (b) False
16. 16.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
19. 19.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) repeat each test
21. 21.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) guess, do not measure (d) change only one thing
22. 22.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
23. 23.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
24. 24.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) measure the same way (d) use the same load
25. 25.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 120 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 210 g. What is the mean (average) load it held, in grams?
28. 28.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
29. 29.🧪 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 C (b) design A (c) design B
30. 30.🧪 A paper bridge was tested three times. It held 320 g, 270 g and 220 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
34. 34.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔢 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) build it with straws
37. 37.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) change only one thing (d) guess, do not measure
39. 39.True or false: to change only one thing is poor testing. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) use the same load (b) guess, do not measure (c) skip writing results (d) hide a failed test

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