Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 70 · 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.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
5. 5.True or false: to repeat each test is poor testing. (a) False (b) True
6. 6.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
7. 7.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
9. 9.🧪 A paper bridge was tested three times. It held 410 g, 220 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) all of them (d) one
11. 11.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
12. 12.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) measure the same way
13. 13.True or false: to use the same load is poor testing. (a) False (b) True
14. 14.🧪 A paper bridge was tested three times. It held 430 g, 340 g and 280 g. What is the mean (average) load it held, in grams?
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) guess, do not measure
16. 16.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
17. 17.🧪 A paper bridge was tested three times. It held 310 g, 220 g and 190 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) read the challenge rules (b) strengthen the weak part
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) test it only once (d) use a new load each time
22. 22.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
23. 23.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
24. 24.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) use a new load each time (d) repeat each test
25. 25.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
28. 28.True or false: to repeat each test is good testing. (a) False (b) True
29. 29.True or false: to record every result is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
31. 31.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change lots at once (d) test it only once
32. 32.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
33. 33.🧪 A paper bridge was tested three times. It held 210 g, 200 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.True or false: to change only one thing is good testing. (a) True (b) False
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.True or false: to change lots at once is poor testing. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) guess, do not measure (d) use a new load each time
38. 38.🧪 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 strongest? (a) design A (b) design B (c) design C
39. 39.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
40. 40.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing

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