Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 190 · 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 the same load? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) change lots at once (d) hide a failed test
3. 3.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
4. 4.🧪 A paper bridge was tested three times. It held 410 g, 310 g and 210 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
6. 6.True or false: to change only one thing is poor testing. (a) False (b) True
7. 7.True or false: to record every result is poor testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 200 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) measure the same way (b) hide a failed test (c) repeat each test (d) use the same load
11. 11.🧪 A paper bridge was tested three times. It held 360 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
14. 14.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
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.True or false: to hide a failed test is poor testing. (a) False (b) True
18. 18.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
19. 19.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) use the same load (d) repeat each test
20. 20.True or false: to repeat each test is good testing. (a) False (b) True
21. 21.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) read the challenge rules
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.True or false: to use a new load each time is good testing. (a) True (b) False
25. 25.🧪 The first prototype held 140 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 210 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.True or false: to guess, do not measure is poor testing. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) guess, do not measure
31. 31.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
32. 32.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
33. 33.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🔢 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
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
38. 38.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) build it with straws (c) choose and draw one (d) strengthen the weak part
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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