Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 178 · 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 hide a failed test? (a) good testing (b) poor testing
2. 2.True or false: to change lots at once is poor testing. (a) True (b) False
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) an early test model (d) a sales poster
4. 4.True or false: to use the same load is poor testing. (a) True (b) False
5. 5.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
6. 6.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) use the same load (d) repeat each test
7. 7.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
8. 8.True or false: to hide a failed test is good testing. (a) True (b) False
9. 9.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
10. 10.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
11. 11.True or false: to test it only once is good testing. (a) True (b) False
12. 12.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
13. 13.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
14. 14.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) strengthen the weak part (c) read the challenge rules (d) choose and draw one
15. 15.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) record every result (d) use the same load
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
17. 17.True or false: to change lots at once is good testing. (a) False (b) True
18. 18.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
19. 19.🧪 A paper bridge was tested three times. It held 360 g, 300 g and 360 g. What is the mean (average) load it held, in grams?
20. 20.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
22. 22.True or false: to use a new load each time is poor testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) load it with coins
24. 24.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
25. 25.True or false: to record every result is good testing. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) guess, do not measure (d) use the same load
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
28. 28.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) build it with straws
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 370 g and design C held 270 g. Which design was the strongest? (a) design A (b) design C (c) design B
30. 30.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) change only one thing (d) measure the same way
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 210 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
35. 35.True or false: to repeat each test is good testing. (a) False (b) True
36. 36.🧪 A paper bridge was tested three times. It held 340 g, 180 g and 290 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
38. 38.🧪 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
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 230 g. Which design was the weakest? (a) design C (b) design B (c) design A
40. 40.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) repeat each test (d) use a new load each time

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