Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 873 · 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.True or false: to record every result is good testing. (a) True (b) False
2. 2.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
3. 3.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) a broken part (d) the final product
4. 4.🔍 Which is the odd one out? (a) skip writing results (b) repeat each test (c) guess, do not measure (d) test it only once
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 400 g and design C held 350 g. Which design was the strongest? (a) design C (b) design A (c) design B
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the weakest? (a) design B (b) design C (c) design A
7. 7.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) guess, do not measure (d) use a new load each time
8. 8.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
11. 11.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
12. 12.🧪 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 weakest? (a) design A (b) design C (c) design B
13. 13.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
14. 14.True or false: to hide a failed test is good testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 250 g, 240 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
17. 17.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 100 g. How many more grams did it hold?
18. 18.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
19. 19.True or false: to change only one thing is good testing. (a) False (b) True
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🧪 A paper bridge was tested three times. It held 230 g, 220 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
25. 25.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 420 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 350 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to change only one thing is poor testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) record every result (b) guess, do not measure (c) change only one thing (d) repeat each test
30. 30.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) change only one thing (d) use a new load each time
31. 31.True or false: to measure the same way is poor testing. (a) False (b) True
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
34. 34.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
35. 35.🧪 A paper bridge was tested three times. It held 280 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
36. 36.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
38. 38.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
39. 39.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
40. 40.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) load it with coins (d) sketch three ideas

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