Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 222 · 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) good testing (b) poor testing
2. 2.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) repeat each test (d) record every result
7. 7.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
8. 8.True or false: to test it only once is poor testing. (a) True (b) False
9. 9.True or false: to hide a failed test is good testing. (a) True (b) False
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) sketch three ideas
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
14. 14.True or false: to test it only once is good testing. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use a new load each time (d) change lots at once
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
17. 17.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
19. 19.True or false: to measure the same way is good testing. (a) False (b) True
20. 20.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 360 g, 340 g and 320 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the weakest? (a) design C (b) design A (c) design B
23. 23.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
24. 24.True or false: to hide a failed test is poor testing. (a) True (b) False
25. 25.True or false: to guess, do not measure is good testing. (a) True (b) False
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.True or false: to skip writing results is good testing. (a) False (b) True
28. 28.True or false: to measure the same way is poor testing. (a) False (b) True
29. 29.True or false: to record every result is good testing. (a) True (b) False
30. 30.🧪 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 strongest? (a) design A (b) design C (c) design B
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) sketch three ideas
32. 32.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
33. 33.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) measure the same way (d) guess, do not measure
34. 34.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 370 g. Which design was the weakest? (a) design B (b) design A (c) design C
36. 36.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) record every result
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
39. 39.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
40. 40.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 230 g. What is the mean (average) load it held, in grams?

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