Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 361 · 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 guess, do not measure? (a) poor testing (b) good testing
2. 2.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) use the same load (d) change only one thing
3. 3.True or false: to change only one thing is poor testing. (a) False (b) True
4. 4.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
5. 5.True or false: to skip writing results is poor testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
7. 7.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design B (c) design A
9. 9.True or false: to repeat each test is good testing. (a) False (b) True
10. 10.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
12. 12.🧪 A paper bridge was tested three times. It held 340 g, 200 g and 330 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) sketch three ideas
14. 14.🔢 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
15. 15.True or false: to measure the same way is poor testing. (a) False (b) True
16. 16.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
17. 17.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) use a new load each time (d) skip writing results
20. 20.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
21. 21.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) repeat each test
22. 22.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) it looks busy (d) the first is wrong
23. 23.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
24. 24.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
25. 25.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
26. 26.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) change only one thing (d) test it only once
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 70 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to test it only once is poor testing. (a) False (b) True
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) sketch three ideas
30. 30.🧪 A paper bridge was tested three times. It held 340 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
33. 33.True or false: to change lots at once is poor testing. (a) False (b) True
34. 34.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 100 g. What is the mean (average) load it held, in grams?
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) change only one thing (d) hide a failed test
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) hide a failed test (d) test it only once
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 130 g. What is the mean (average) load it held, in grams?

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