Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 365 · 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.🧪 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
2. 2.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) load it with coins (d) read the challenge rules
5. 5.True or false: to record every result is good testing. (a) True (b) False
6. 6.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
8. 8.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use a new load each time (d) skip writing results
10. 10.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
11. 11.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
12. 12.🧪 What is a prototype? (a) a sales poster (b) the final product (c) a broken part (d) an early test model
13. 13.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 200 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
15. 15.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
16. 16.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
18. 18.🧪 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 A (c) design C
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) choose and draw one (c) strengthen the weak part (d) build it with straws
20. 20.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) skip writing results (d) guess, do not measure
21. 21.True or false: to test it only once is good testing. (a) False (b) True
22. 22.True or false: to hide a failed test is poor testing. (a) True (b) False
23. 23.True or false: to skip writing results is poor testing. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) skip writing results (d) change lots at once
25. 25.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 310 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
28. 28.🔢 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
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
32. 32.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
35. 35.🧪 A paper bridge was tested three times. It held 270 g, 120 g and 180 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the strongest? (a) design A (b) design B (c) design C
37. 37.True or false: to measure the same way is good testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
39. 39.True or false: to repeat each test is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?

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