Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 320 · 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.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) sketch three ideas
2. 2.True or false: to test it only once is good testing. (a) False (b) True
3. 3.🧪 A paper bridge was tested three times. It held 370 g, 250 g and 190 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) sketch three ideas (b) choose and draw one
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.🧪 A paper bridge was tested three times. It held 250 g, 100 g and 100 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 190 g. What is the mean (average) load it held, in grams?
9. 9.🧪 What is a prototype? (a) the final product (b) a broken part (c) an early test model (d) a sales poster
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
11. 11.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
12. 12.True or false: to change lots at once is good testing. (a) True (b) False
13. 13.🧪 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
14. 14.True or false: to test it only once is poor testing. (a) True (b) False
15. 15.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design A (b) design C (c) design B
17. 17.🔍 Which is the odd one out? (a) hide a failed test (b) skip writing results (c) change lots at once (d) change only one thing
18. 18.True or false: to change lots at once is poor testing. (a) False (b) True
19. 19.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
20. 20.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) measure the same way (d) guess, do not measure
21. 21.True or false: to record every result is good testing. (a) False (b) True
22. 22.True or false: to use a new load each time is good testing. (a) True (b) False
23. 23.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
24. 24.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
25. 25.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) use a new load each time (d) repeat each test
26. 26.True or false: to guess, do not measure is poor testing. (a) True (b) False
27. 27.True or false: to record every result is poor testing. (a) True (b) False
28. 28.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
29. 29.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
32. 32.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) record every result (d) measure the same way
33. 33.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
34. 34.🔢 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
35. 35.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) skip writing results (d) measure the same way
36. 36.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design A (c) design C
38. 38.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) measure the same way (d) repeat each test
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 210 g, 130 g and 260 g. What is the mean (average) load it held, in grams?

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