Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 304 · 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) record every result (b) guess, do not measure (c) use the same load (d) repeat each test
2. 2.True or false: to use the same load is poor testing. (a) False (b) True
3. 3.True or false: to repeat each test is poor testing. (a) True (b) False
4. 4.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
5. 5.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) measure the same way (d) hide a failed test
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) change only one thing (d) repeat each test
8. 8.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
9. 9.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 180 g and 190 g. What is the mean (average) load it held, in grams?
11. 11.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
13. 13.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
14. 14.True or false: to record every result is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
16. 16.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
17. 17.True or false: to hide a failed test is good testing. (a) False (b) True
18. 18.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
19. 19.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 200 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
21. 21.🧪 A paper bridge was tested three times. It held 280 g, 220 g and 340 g. What is the mean (average) load it held, in grams?
22. 22.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
24. 24.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 180 g. What is the mean (average) load it held, in grams?
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the strongest? (a) design B (b) design A (c) design C
26. 26.🧪 A paper bridge was tested three times. It held 220 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.🧪 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 A (b) design C (c) design B
29. 29.🧪 A paper bridge was tested three times. It held 320 g, 260 g and 320 g. What is the mean (average) load it held, in grams?
30. 30.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
31. 31.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) sketch three ideas
32. 32.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) build it with straws (b) load it with coins
33. 33.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
34. 34.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
35. 35.True or false: to test it only once is good testing. (a) False (b) True
36. 36.🧪 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
37. 37.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
39. 39.True or false: to change lots at once is poor testing. (a) False (b) True
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design A (b) design C (c) design B

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