Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 436 · 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, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) sketch three ideas (b) strengthen the weak part
2. 2.True or false: to change only one thing is good testing. (a) True (b) False
3. 3.🧪 A paper bridge was tested three times. It held 410 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
5. 5.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) use the same load
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) test it only once
7. 7.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
8. 8.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 240 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the weakest? (a) design B (b) design C (c) design A
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
13. 13.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) use the same load (d) repeat each test
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
15. 15.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) hide a failed test (d) record every result
17. 17.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
18. 18.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 310 g and design C held 260 g. Which design was the strongest? (a) design B (b) design C (c) design A
20. 20.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) build it with straws
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) choose and draw one
22. 22.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) skip writing results (d) guess, do not measure
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 110 g. Which design was the weakest? (a) design C (b) design B (c) design A
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the weakest? (a) design C (b) design A (c) design B
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
30. 30.True or false: to measure the same way is good testing. (a) False (b) True
31. 31.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design A (b) design B (c) design C
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.🔢 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
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 150 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) guess, do not measure (d) record every result
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A

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