Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 570 · 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, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) measure the same way (d) record every result
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) load it with coins
5. 5.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) test it only once (d) use a new load each time
6. 6.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
7. 7.True or false: to measure the same way is good testing. (a) False (b) True
8. 8.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
9. 9.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 100 g. Which design was the strongest? (a) design A (b) design C (c) design B
12. 12.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) repeat each test
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 90 g and 210 g. What is the mean (average) load it held, in grams?
16. 16.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
17. 17.True or false: to skip writing results is poor testing. (a) True (b) False
18. 18.True or false: to use the same load is good testing. (a) False (b) True
19. 19.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 280 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
23. 23.True or false: to change only one thing is poor testing. (a) True (b) False
24. 24.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.True or false: to use a new load each time is good testing. (a) True (b) False
27. 27.True or false: to test it only once is poor testing. (a) True (b) False
28. 28.🔢 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) sketch three ideas (d) read the challenge rules
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) use a new load each time
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
31. 31.True or false: to use the same load is poor testing. (a) True (b) False
32. 32.🧪 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 weakest? (a) design B (b) design A (c) design C
33. 33.True or false: to record every result is good testing. (a) False (b) True
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
35. 35.🧪 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
36. 36.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) guess, do not measure (d) test it only once
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) test it only once
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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