Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 617 · 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.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) sketch three ideas
2. 2.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 270 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 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
5. 5.🧪 A paper bridge was tested three times. It held 190 g, 170 g and 150 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) measure the same way (d) use a new load each time
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) measure the same way (d) change only one thing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design C (b) design A (c) design B
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) test it only once
10. 10.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 210 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
12. 12.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
13. 13.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
15. 15.True or false: to measure the same way is good testing. (a) False (b) True
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
17. 17.True or false: to measure the same way is poor testing. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) repeat each test (d) guess, do not measure
19. 19.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
20. 20.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) change only one thing (d) record every result
21. 21.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
22. 22.True or false: to hide a failed test is poor testing. (a) True (b) False
23. 23.🧪 A paper bridge was tested three times. It held 350 g, 290 g and 320 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to hide a failed test is good testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) choose and draw one
26. 26.🧪 Why repeat a test three times? (a) the first is wrong (b) to use more paper (c) it looks busy (d) to get reliable results
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
29. 29.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
31. 31.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
32. 32.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
34. 34.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
37. 37.True or false: to change only one thing is poor testing. (a) True (b) False
38. 38.🧪 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 A (b) design C (c) design B
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 310 g, 160 g and 160 g. What is the mean (average) load it held, in grams?

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