Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 644 · 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 poor testing. (a) False (b) True
2. 2.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 250 g. What is the mean (average) load it held, in grams?
3. 3.🧪 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 strongest? (a) design B (b) design A (c) design C
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) test it only once (d) guess, do not measure
5. 5.🧪 A paper bridge was tested three times. It held 230 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) use the same load (b) use a new load each time (c) measure the same way (d) repeat each test
7. 7.🧪 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
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design B (b) design A (c) design C
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design B (b) design C (c) design A
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
15. 15.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) change lots at once (d) change only one thing
16. 16.🧪 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 weakest? (a) design C (b) design A (c) design B
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) load it with coins
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
19. 19.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use a new load each time (d) change lots at once
20. 20.True or false: to measure the same way is good testing. (a) True (b) False
21. 21.True or false: to repeat each test is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 280 g, 260 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to use a new load each time is good testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) skip writing results (d) measure the same way
25. 25.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
26. 26.True or false: to change only one thing is poor testing. (a) True (b) False
27. 27.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
28. 28.True or false: to use the same load is poor testing. (a) True (b) False
29. 29.🧪 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
30. 30.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
31. 31.True or false: to change only one thing is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 320 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) repeat each test (d) hide a failed test
34. 34.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
35. 35.True or false: to measure the same way is poor testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 150 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?

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