Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 40 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
3. 3.True or false: to repeat each test is good testing. (a) False (b) True
4. 4.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
5. 5.🧪 A paper bridge was tested three times. It held 340 g, 220 g and 160 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design A (b) design B (c) design C
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) repeat each test (d) hide a failed test
8. 8.🔢 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
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) test it only once (d) skip writing results
12. 12.True or false: to test it only once is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 100 g. What is the mean (average) load it held, in grams?
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
17. 17.True or false: to hide a failed test is good testing. (a) True (b) False
18. 18.True or false: to test it only once is poor testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.True or false: to hide a failed test is poor testing. (a) False (b) True
21. 21.True or false: to skip writing results is good testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
24. 24.True or false: to measure the same way is poor testing. (a) True (b) False
25. 25.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
26. 26.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
30. 30.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) use a new load each time (d) guess, do not measure
31. 31.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
32. 32.🔢 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
33. 33.🔢 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
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.True or false: to skip writing results is poor testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) record every result
37. 37.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
38. 38.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 160 g, 90 g and 200 g. What is the mean (average) load it held, in grams?

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