Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 778 · 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.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) measure the same way (d) change lots at once
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
3. 3.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) use a new load each time (d) measure the same way
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 B (b) design C (c) design A
6. 6.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) guess, do not measure
7. 7.True or false: to test it only once is good testing. (a) True (b) False
8. 8.True or false: to change lots at once is poor testing. (a) True (b) False
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) guess, do not measure
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
11. 11.🔢 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) build it with straws (d) choose and draw one
12. 12.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
13. 13.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
14. 14.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
15. 15.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
16. 16.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 120 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
19. 19.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
21. 21.True or false: to test it only once is poor testing. (a) False (b) True
22. 22.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 160 g. What is the mean (average) load it held, in grams?
23. 23.True or false: to guess, do not measure is poor testing. (a) False (b) True
24. 24.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
25. 25.🔢 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) load it with coins
26. 26.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to decorate a room (c) to test ideas cheaply (d) to avoid testing
27. 27.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
28. 28.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) skip writing results (d) use the same load
29. 29.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
30. 30.🔢 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
31. 31.🧪 A paper bridge was tested three times. It held 450 g, 340 g and 260 g. What is the mean (average) load it held, in grams?
32. 32.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
33. 33.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
35. 35.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) sketch three ideas
36. 36.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
37. 37.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
38. 38.True or false: to repeat each test is poor testing. (a) False (b) True
39. 39.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
40. 40.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins

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