Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 781 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design B (c) design C
2. 2.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
3. 3.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
4. 4.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
5. 5.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
6. 6.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
8. 8.True or false: to change lots at once is good testing. (a) False (b) True
9. 9.🔢 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
10. 10.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the strongest? (a) design C (b) design A (c) design B
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) sketch three ideas
14. 14.🧪 A paper bridge was tested three times. It held 250 g, 190 g and 310 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) strengthen the weak part (b) build it with straws
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
18. 18.True or false: to use a new load each time is poor testing. (a) False (b) True
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
21. 21.True or false: to hide a failed test is poor testing. (a) True (b) False
22. 22.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.True or false: to skip writing results is good testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
26. 26.True or false: to measure the same way is poor testing. (a) True (b) False
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 180 g and 140 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 240 g, 160 g and 110 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to record every result is poor testing. (a) False (b) True
30. 30.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) measure the same way (d) record every result
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
33. 33.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
34. 34.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) build it with straws (c) choose and draw one (d) sketch three ideas
35. 35.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
36. 36.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) measure the same way (d) change only one thing
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 340 g. What is the mean (average) load it held, in grams?
39. 39.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules

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