Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 505 · 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 record every result? (a) good testing (b) poor testing
2. 2.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
3. 3.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) load it with coins (d) sketch three ideas
4. 4.True or false: to test it only once is poor testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 110 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
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design A (b) design B (c) design C
8. 8.🧪 A paper bridge was tested three times. It held 390 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 160 g, 150 g and 170 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
11. 11.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
12. 12.🧪 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 strongest? (a) design A (b) design B (c) design C
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design B (c) design C
14. 14.True or false: to hide a failed test is poor testing. (a) False (b) True
15. 15.True or false: to record every result is poor testing. (a) False (b) True
16. 16.True or false: to repeat each test is poor testing. (a) True (b) False
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
19. 19.True or false: to guess, do not measure is good testing. (a) True (b) False
20. 20.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
21. 21.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to sell them at once (d) to avoid testing
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
23. 23.True or false: to test it only once is good testing. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) change only one thing (d) use a new load each time
25. 25.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
26. 26.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) record every result (d) repeat each test
27. 27.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
29. 29.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) measure the same way (d) use a new load each time
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
32. 32.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
33. 33.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
36. 36.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
37. 37.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) skip writing results (d) change only one thing
39. 39.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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