Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 658 · 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.True or false: to change lots at once is good testing. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change only one thing (d) change lots at once
3. 3.🧪 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 C (c) design A
4. 4.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) hide a failed test (d) change only one thing
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) strengthen the weak part
6. 6.True or false: to use the same load is poor testing. (a) True (b) False
7. 7.True or false: to use a new load each time is poor testing. (a) False (b) True
8. 8.🧪 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 B (c) design C
9. 9.True or false: to measure the same way is poor testing. (a) False (b) True
10. 10.🧪 A paper bridge was tested three times. It held 330 g, 230 g and 160 g. What is the mean (average) load it held, in grams?
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) choose and draw one
12. 12.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) choose and draw one (c) read the challenge rules (d) load it with coins
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) load it with coins
14. 14.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 160 g. What is the mean (average) load it held, in grams?
15. 15.🔢 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
16. 16.True or false: to guess, do not measure is good testing. (a) False (b) True
17. 17.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
18. 18.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
19. 19.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🧪 A paper bridge was tested three times. It held 160 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 310 g, 150 g and 230 g. What is the mean (average) load it held, in grams?
23. 23.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) sketch three ideas
25. 25.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
26. 26.True or false: to skip writing results is good testing. (a) True (b) False
27. 27.True or false: to repeat each test is good testing. (a) True (b) False
28. 28.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
29. 29.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use the same load (d) measure the same way
30. 30.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 220 g, 150 g and 200 g. What is the mean (average) load it held, in grams?
33. 33.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) skip writing results
34. 34.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design B (b) design C (c) design A
36. 36.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
37. 37.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
38. 38.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
39. 39.🧪 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
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B

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