Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 917 · 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) measure the same way (b) change only one thing (c) repeat each test (d) test it only once
2. 2.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 300 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.🔢 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) strengthen the weak part (d) read the challenge rules
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
7. 7.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.🧪 A paper bridge was tested three times. It held 190 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) strengthen the weak part
11. 11.True or false: to repeat each test is good testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design A (b) design C (c) design B
13. 13.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) hide a failed test (d) change lots at once
14. 14.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) skip writing results (d) change only one thing
16. 16.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) use the same load
17. 17.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 210 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
20. 20.True or false: to change only one thing is good testing. (a) True (b) False
21. 21.True or false: to use a new load each time is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.True or false: to guess, do not measure is poor testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) use a new load each time
27. 27.True or false: to use a new load each time is good testing. (a) False (b) True
28. 28.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
29. 29.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) repeat each test (d) hide a failed test
32. 32.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
34. 34.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) measure the same way
37. 37.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.True or false: to measure the same way is good testing. (a) False (b) True
40. 40.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none

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