Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 103 · 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.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) strengthen the weak part (c) build it with straws (d) load it with coins
3. 3.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
4. 4.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
5. 5.True or false: to guess, do not measure is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
7. 7.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
8. 8.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) repeat each test
9. 9.🔢 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
10. 10.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) use a new load each time (d) skip writing results
12. 12.True or false: to change lots at once is poor testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
16. 16.🧪 A paper bridge was tested three times. It held 170 g, 130 g and 150 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
18. 18.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) test it only once
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) read the challenge rules
20. 20.🧪 What is a prototype? (a) the final product (b) a broken part (c) a sales poster (d) an early test model
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 150 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
24. 24.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
25. 25.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.True or false: to use the same load is poor testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) load it with coins (c) sketch three ideas (d) choose and draw one
30. 30.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.🔢 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
33. 33.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
34. 34.True or false: to change only one thing is poor testing. (a) False (b) True
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
37. 37.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) measure the same way
38. 38.🧪 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
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 310 g and design C held 360 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.True or false: to guess, do not measure is poor testing. (a) True (b) False

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