Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 736 · 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.🧪 A paper bridge was tested three times. It held 290 g, 270 g and 250 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) change lots at once (d) hide a failed test
3. 3.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 100 g. What is the mean (average) load it held, in grams?
4. 4.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
6. 6.True or false: to hide a failed test is good testing. (a) False (b) True
7. 7.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
9. 9.True or false: to use a new load each time is good testing. (a) False (b) True
10. 10.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
11. 11.True or false: to guess, do not measure is poor testing. (a) True (b) False
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🧪 A paper bridge was tested three times. It held 310 g, 190 g and 190 g. What is the mean (average) load it held, in grams?
14. 14.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use the same load (d) record every result
17. 17.🧪 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 weakest? (a) design A (b) design C (c) design B
18. 18.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design A (c) design C
21. 21.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
22. 22.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to sell them at once (d) to decorate a room
23. 23.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
24. 24.🧪 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
25. 25.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
28. 28.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
29. 29.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
30. 30.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 170 g. What is the mean (average) load it held, in grams?
31. 31.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) repeat each test (d) skip writing results
35. 35.True or false: to use the same load is good testing. (a) False (b) True
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
37. 37.🧪 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 B (b) design C (c) design A
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
40. 40.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) skip writing results (d) record every result

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