Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 906 · 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.🧪 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?
2. 2.🔍 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
3. 3.🔢 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
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
5. 5.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) measure the same way (d) guess, do not measure
7. 7.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
8. 8.True or false: to guess, do not measure is good testing. (a) True (b) False
9. 9.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) skip writing results (d) test it only once
11. 11.🧪 A paper bridge was tested three times. It held 300 g, 190 g and 290 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
13. 13.🧪 A paper bridge was tested three times. It held 240 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
15. 15.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.True or false: to record every result is poor testing. (a) False (b) True
18. 18.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
19. 19.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
21. 21.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
22. 22.True or false: to measure the same way is poor testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) guess, do not measure (d) repeat each test
25. 25.🧪 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 weakest? (a) design C (b) design B (c) design A
26. 26.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
27. 27.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) measure the same way
28. 28.True or false: to change only one thing is poor testing. (a) False (b) True
29. 29.🧪 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 C (c) design B
30. 30.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
31. 31.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to measure the same way is good testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) change only one thing (d) change lots at once
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
39. 39.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing

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