Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 340 · 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.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) use the same load (d) measure the same way
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
4. 4.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
6. 6.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
7. 7.🧪 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 weakest? (a) design C (b) design A (c) design B
8. 8.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) guess, do not measure (b) change lots at once (c) repeat each test (d) hide a failed test
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
11. 11.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
15. 15.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) record every result (d) change only one thing
16. 16.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to avoid testing (d) to test ideas cheaply
17. 17.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 180 g. What is the mean (average) load it held, in grams?
18. 18.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) test it only once (d) hide a failed test
19. 19.True or false: to record every result is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) change only one thing (d) repeat each test
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 220 g and design C held 320 g. Which design was the strongest? (a) design B (b) design C (c) design A
22. 22.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) read the challenge rules
23. 23.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 350 g. Which design was the weakest? (a) design A (b) design B (c) design C
25. 25.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 390 g. Which design was the weakest? (a) design C (b) design A (c) design B
27. 27.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 250 g. What is the mean (average) load it held, in grams?
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) hide a failed test (d) test it only once
29. 29.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
30. 30.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
31. 31.True or false: to hide a failed test is good testing. (a) True (b) False
32. 32.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
34. 34.True or false: to change lots at once is good testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
36. 36.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
37. 37.True or false: to measure the same way is good testing. (a) True (b) False
38. 38.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
40. 40.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 230 g. What is the mean (average) load it held, in grams?

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