Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 71 · 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) guess, do not measure (b) record every result (c) measure the same way (d) repeat each test
2. 2.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
3. 3.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
4. 4.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use a new load each time (d) change only one thing
5. 5.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
6. 6.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
10. 10.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
11. 11.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
13. 13.🔢 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
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design C (b) design B (c) design A
16. 16.True or false: to test it only once is poor testing. (a) False (b) True
17. 17.🧪 A paper bridge was tested three times. It held 400 g, 290 g and 330 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
19. 19.True or false: to guess, do not measure is poor testing. (a) False (b) True
20. 20.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 170 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
22. 22.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) use a new load each time (d) test it only once
23. 23.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 260 g and 220 g. What is the mean (average) load it held, in grams?
25. 25.🧪 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
26. 26.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design B (b) design A (c) design C
28. 28.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) measure the same way (d) hide a failed test
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 300 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to use the same load is good testing. (a) True (b) False
33. 33.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
35. 35.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) repeat each test (d) test it only once
36. 36.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design A (c) design B
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) measure the same way
39. 39.🧪 A paper bridge was tested three times. It held 300 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 330 g. What is the mean (average) load it held, in grams?

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