Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 799 · 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 360 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
5. 5.True or false: to repeat each test is poor testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) strengthen the weak part
7. 7.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
8. 8.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 80 g and 230 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
11. 11.🧪 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
12. 12.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
13. 13.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to repeat each test is good testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) use a new load each time
17. 17.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) record every result (d) repeat each test
18. 18.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
19. 19.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
20. 20.🧪 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 strongest? (a) design B (b) design C (c) design A
21. 21.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) change only one thing
23. 23.🧪 A paper bridge was tested three times. It held 220 g, 110 g and 270 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.True or false: to hide a failed test is good testing. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) use the same load (d) measure the same way
28. 28.True or false: to hide a failed test is poor testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) guess, do not measure (d) use the same load
30. 30.True or false: to record every result is good testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
33. 33.True or false: to use the same load is poor testing. (a) True (b) False
34. 34.True or false: to change lots at once is good testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
36. 36.🔢 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
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) sketch three ideas
39. 39.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
40. 40.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) record every result (d) test it only once

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