Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 887 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
2. 2.🧪 A paper bridge was tested three times. It held 250 g, 170 g and 120 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) test it only once (d) record every result
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design A (b) design C (c) design B
5. 5.🧪 A paper bridge was tested three times. It held 210 g, 120 g and 210 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
8. 8.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
9. 9.True or false: to skip writing results is poor testing. (a) True (b) False
10. 10.True or false: to guess, do not measure is good testing. (a) False (b) True
11. 11.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
12. 12.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) choose and draw one (d) strengthen the weak part
17. 17.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
18. 18.True or false: to test it only once is good testing. (a) False (b) True
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.True or false: to change only one thing is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
22. 22.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
25. 25.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
26. 26.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
27. 27.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) repeat each test (d) hide a failed test
28. 28.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 210 g. What is the mean (average) load it held, in grams?
29. 29.🧪 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 B (b) design A (c) design C
30. 30.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) load it with coins
31. 31.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
33. 33.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.True or false: to measure the same way is good testing. (a) True (b) False
36. 36.True or false: to use the same load is poor testing. (a) True (b) False
37. 37.True or false: to change lots at once is poor testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
39. 39.🧪 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 B (b) design C (c) design A
40. 40.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model

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