Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 923 · 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.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 360 g, 160 g and 260 g. What is the mean (average) load it held, in grams?
3. 3.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) change lots at once (d) skip writing results
4. 4.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
5. 5.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) skip writing results (d) measure the same way
6. 6.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) change only one thing (d) measure the same way
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 230 g and design C held 280 g. Which design was the weakest? (a) design A (b) design C (c) design B
8. 8.🔍 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
9. 9.🔢 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
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) load it with coins
11. 11.True or false: to change only one thing is good testing. (a) False (b) True
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) one (d) two
13. 13.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 320 g, 190 g and 360 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to hide a failed test is poor testing. (a) True (b) False
16. 16.True or false: to skip writing results is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
18. 18.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
19. 19.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
20. 20.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
21. 21.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
22. 22.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
23. 23.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) hide a failed test
24. 24.True or false: to measure the same way is good testing. (a) False (b) True
25. 25.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 210 g. What is the mean (average) load it held, in grams?
26. 26.True or false: to record every result is good testing. (a) True (b) False
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
28. 28.True or false: to skip writing results is poor testing. (a) True (b) False
29. 29.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
30. 30.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
31. 31.🧪 A paper bridge was tested three times. It held 210 g, 50 g and 190 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 250 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
33. 33.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
34. 34.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
35. 35.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 370 g. What is the mean (average) load it held, in grams?
37. 37.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
38. 38.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
39. 39.True or false: to test it only once is poor testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) sketch three ideas

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