Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 114 · 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 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) build it with straws
3. 3.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 330 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to measure the same way is good testing. (a) False (b) True
5. 5.🧪 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
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
8. 8.True or false: to measure the same way is poor testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 170 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) skip writing results (d) change lots at once
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
12. 12.🧪 A paper bridge was tested three times. It held 330 g, 270 g and 240 g. What is the mean (average) load it held, in grams?
13. 13.🔢 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
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) test it only once (c) record every result (d) skip writing results
15. 15.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
16. 16.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) test it only once (d) change only one thing
17. 17.True or false: to use the same load is poor testing. (a) True (b) False
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the weakest? (a) design C (b) design A (c) design B
19. 19.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
20. 20.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
22. 22.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use a new load each time (d) measure the same way
25. 25.True or false: to repeat each test is good testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
27. 27.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) record every result
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🔢 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) load it with coins (d) build it with straws
31. 31.🧪 A paper bridge was tested three times. It held 230 g, 220 g and 210 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to change lots at once is good testing. (a) True (b) False
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 200 g, 140 g and 170 g. What is the mean (average) load it held, in grams?
36. 36.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
37. 37.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) use a new load each time
38. 38.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) repeat each test (d) guess, do not measure
40. 40.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?

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