Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 751 · 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 “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) build it with straws
2. 2.True or false: to test it only once is poor testing. (a) False (b) True
3. 3.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
4. 4.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) skip writing results (d) repeat each test
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) load it with coins (c) build it with straws (d) sketch three ideas
6. 6.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use the same load (d) measure the same way
7. 7.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
8. 8.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design C (b) design B (c) design A
10. 10.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
11. 11.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) use the same load
12. 12.True or false: to skip writing results is good testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 110 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
17. 17.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) one (d) all of them
19. 19.True or false: to record every result is poor testing. (a) True (b) False
20. 20.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
21. 21.True or false: to use a new load each time is poor testing. (a) False (b) True
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the strongest? (a) design B (b) design A (c) design C
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design B (b) design A (c) design C
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design A (b) design C (c) design B
25. 25.True or false: to measure the same way is poor testing. (a) False (b) True
26. 26.🧪 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
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) test it only once (d) guess, do not measure
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws
32. 32.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) hide a failed test
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
34. 34.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
35. 35.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the strongest? (a) design A (b) design C (c) design B
37. 37.True or false: to repeat each test is good testing. (a) False (b) True
38. 38.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 160 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) guess, do not measure (d) measure the same way

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