Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 968 · 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.True or false: to change lots at once is good testing. (a) True (b) False
2. 2.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
3. 3.True or false: to skip writing results is poor testing. (a) True (b) False
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) skip writing results (d) change lots at once
7. 7.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 150 g. What is the mean (average) load it held, in grams?
9. 9.True or false: to test it only once is poor testing. (a) False (b) True
10. 10.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
12. 12.True or false: to change only one thing is good testing. (a) True (b) False
13. 13.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
14. 14.🧪 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 strongest? (a) design A (b) design B (c) design C
15. 15.True or false: to test it only once is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
17. 17.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
19. 19.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
20. 20.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
21. 21.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) measure the same way (d) hide a failed test
24. 24.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
25. 25.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) change only one thing (d) repeat each test
26. 26.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
27. 27.True or false: to skip writing results is good testing. (a) False (b) True
28. 28.True or false: to use a new load each time is good testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) hide a failed test (d) change only one thing
30. 30.🔢 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
31. 31.🧪 A paper bridge was tested three times. It held 260 g, 120 g and 130 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) measure the same way (d) record every result
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) load it with coins (d) choose and draw one
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) record every result (d) repeat each test
36. 36.True or false: to guess, do not measure is poor testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.🧪 A paper bridge was tested three times. It held 350 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design A (b) design C (c) design B

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