Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 197 · 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 change only one thing? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) use the same load (d) use a new load each time
3. 3.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 200 g. What is the mean (average) load it held, in grams?
4. 4.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
5. 5.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
6. 6.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 260 g, 260 g and 260 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to repeat each test is poor testing. (a) False (b) True
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
10. 10.🧪 A paper bridge was tested three times. It held 160 g, 140 g and 150 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 380 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
13. 13.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) build it with straws (c) load it with coins (d) choose and draw one
14. 14.🧪 A paper bridge was tested three times. It held 220 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change only one thing is good testing. (a) False (b) True
16. 16.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
17. 17.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) build it with straws (c) choose and draw one (d) sketch three ideas
18. 18.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
19. 19.🔢 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
20. 20.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) skip writing results (d) test it only once
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) skip writing results (c) measure the same way (d) repeat each test
22. 22.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) choose and draw one (b) build it with straws
23. 23.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
24. 24.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
25. 25.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
26. 26.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) hide a failed test (d) record every result
27. 27.🔍 Which is the odd one out? (a) change lots at once (b) hide a failed test (c) use the same load (d) use a new load each time
28. 28.🧪 A paper bridge was tested three times. It held 300 g, 240 g and 240 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to use the same load is good testing. (a) False (b) True
30. 30.🧪 A paper bridge was tested three times. It held 320 g, 140 g and 260 g. What is the mean (average) load it held, in grams?
31. 31.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
32. 32.True or false: to skip writing results is good testing. (a) True (b) False
33. 33.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 460 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design C (c) design B
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
37. 37.🧪 A paper bridge was tested three times. It held 350 g, 330 g and 370 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change lots at once is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
40. 40.True or false: to change lots at once is good testing. (a) True (b) False

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