Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 802 · 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.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) use a new load each time (d) measure the same way
2. 2.True or false: to change only one thing is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
4. 4.🧪 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 weakest? (a) design A (b) design C (c) design B
5. 5.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) hide a failed test (d) record every result
6. 6.🧪 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
7. 7.🧪 A paper bridge was tested three times. It held 220 g, 80 g and 150 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
10. 10.🧪 A paper bridge was tested three times. It held 310 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) repeat each test
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
15. 15.🔢 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
16. 16.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
17. 17.🧪 What is a prototype? (a) an early test model (b) a broken part (c) the final product (d) a sales poster
18. 18.🧪 A paper bridge was tested three times. It held 240 g, 50 g and 160 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to measure the same way is good testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 320 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
22. 22.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
23. 23.True or false: to use a new load each time is good testing. (a) True (b) False
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
25. 25.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) load it with coins
26. 26.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
27. 27.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) read the challenge rules (b) load it with coins
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) measure the same way
30. 30.True or false: to repeat each test is poor testing. (a) True (b) False
31. 31.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) choose and draw one
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 270 g and 410 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to use the same load is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
36. 36.True or false: to test it only once is poor testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.True or false: to record every result is poor testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 170 g, 110 g and 230 g. What is the mean (average) load it held, in grams?
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins

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