Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 252 · 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.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) hide a failed test (d) record every result
2. 2.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 310 g, 260 g and 240 g. What is the mean (average) load it held, in grams?
4. 4.True or false: to skip writing results is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) use a new load each time (d) record every result
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) record every result (d) change only one thing
8. 8.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design A (b) design C (c) design B
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
11. 11.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
12. 12.True or false: to skip writing results is good testing. (a) False (b) True
13. 13.True or false: to change only one thing is good testing. (a) False (b) True
14. 14.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) test it only once (d) guess, do not measure
16. 16.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
17. 17.True or false: to repeat each test is poor testing. (a) False (b) True
18. 18.True or false: to change lots at once is good testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design C (b) design A (c) design B
20. 20.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
21. 21.True or false: to use a new load each time is good testing. (a) True (b) False
22. 22.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 320 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
25. 25.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 230 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design A (b) design B (c) design C
28. 28.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) skip writing results (d) guess, do not measure
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🔍 Which is the odd one out? (a) use the same load (b) test it only once (c) change only one thing (d) repeat each test
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 A paper bridge was tested three times. It held 290 g, 220 g and 180 g. What is the mean (average) load it held, in grams?
33. 33.True or false: to measure the same way is poor testing. (a) True (b) False
34. 34.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
36. 36.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
37. 37.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) build it with straws
40. 40.True or false: to use the same load is poor testing. (a) False (b) True

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