Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 546 · 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 is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
2. 2.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
3. 3.True or false: to change only one thing is poor testing. (a) False (b) True
4. 4.🧪 A paper bridge was tested three times. It held 230 g, 110 g and 140 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) load it with coins (b) build it with straws
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) test it only once (d) guess, do not measure
8. 8.🧪 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
9. 9.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) measure the same way
10. 10.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) two (d) none
13. 13.🧪 A paper bridge was tested three times. It held 310 g, 250 g and 340 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
16. 16.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
17. 17.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
18. 18.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
19. 19.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
20. 20.True or false: to hide a failed test is good testing. (a) True (b) False
21. 21.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 310 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) load it with coins (b) strengthen the weak part
23. 23.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) strengthen the weak part (c) load it with coins (d) sketch three ideas
24. 24.True or false: to guess, do not measure is good testing. (a) False (b) True
25. 25.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the strongest? (a) design C (b) design A (c) design B
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
29. 29.True or false: to measure the same way is poor testing. (a) False (b) True
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) read the challenge rules
31. 31.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
32. 32.🧪 A paper bridge was tested three times. It held 230 g, 60 g and 160 g. What is the mean (average) load it held, in grams?
33. 33.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) repeat each test (d) skip writing results
37. 37.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
38. 38.True or false: to change lots at once is poor testing. (a) False (b) True
39. 39.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 240 g and 300 g. What is the mean (average) load it held, in grams?

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