Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 733 · 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.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design B (c) design A
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 140 g and design C held 240 g. Which design was the weakest? (a) design C (b) design A (c) design B
3. 3.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
4. 4.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) measure the same way (d) use the same load
5. 5.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) read the challenge rules
7. 7.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
8. 8.True or false: to record every result is good testing. (a) True (b) False
9. 9.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
11. 11.True or false: to test it only once is poor testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design A (b) design C (c) design B
13. 13.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
14. 14.True or false: to test it only once is good testing. (a) False (b) True
15. 15.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
16. 16.True or false: to guess, do not measure is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 360 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
20. 20.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
22. 22.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 120 g. What is the mean (average) load it held, in grams?
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) use a new load each time (d) measure the same way
24. 24.True or false: to use a new load each time is good testing. (a) True (b) False
25. 25.True or false: to change lots at once is good testing. (a) False (b) True
26. 26.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) guess, do not measure (b) hide a failed test (c) skip writing results (d) record every result
28. 28.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
29. 29.True or false: to measure the same way is good testing. (a) False (b) True
30. 30.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
31. 31.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) measure the same way (d) record every result
33. 33.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
34. 34.🧪 A paper bridge was tested three times. It held 380 g, 310 g and 330 g. What is the mean (average) load it held, in grams?
35. 35.🧪 A paper bridge was tested three times. It held 300 g, 180 g and 150 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 310 g, 230 g and 390 g. What is the mean (average) load it held, in grams?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
38. 38.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 370 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design B (b) design C (c) design A

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