Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 450 · 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.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) skip writing results (d) record every result
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
3. 3.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
4. 4.True or false: to guess, do not measure is good testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
6. 6.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
7. 7.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) change only one thing (d) hide a failed test
8. 8.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
9. 9.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) repeat each test (d) measure the same way
11. 11.True or false: to measure the same way is good testing. (a) True (b) False
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design B (c) design A
18. 18.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
19. 19.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) guess, do not measure (d) use the same load
20. 20.True or false: to use the same load is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) read the challenge rules (d) build it with straws
22. 22.True or false: to change only one thing is poor testing. (a) True (b) False
23. 23.True or false: to use a new load each time is poor testing. (a) False (b) True
24. 24.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
25. 25.🧪 A paper bridge was tested three times. It held 400 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
29. 29.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
30. 30.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) measure the same way (d) change lots at once
31. 31.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 230 g. What is the mean (average) load it held, in grams?
32. 32.🧪 A paper bridge was tested three times. It held 230 g, 120 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
35. 35.True or false: to use the same load is poor testing. (a) False (b) True
36. 36.True or false: to record every result is good testing. (a) False (b) True
37. 37.True or false: to hide a failed test is good testing. (a) False (b) True
38. 38.True or false: to skip writing results is good testing. (a) True (b) False
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
40. 40.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?

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