Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 253 · 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) repeat each test (b) skip writing results (c) test it only once (d) use a new load each time
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 B (b) design A (c) design C
3. 3.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) build it with straws (c) sketch three ideas (d) read the challenge rules
4. 4.True or false: to test it only once is good testing. (a) True (b) False
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design A (c) design B
6. 6.True or false: to change only one thing is poor testing. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) change lots at once (d) skip writing results
8. 8.True or false: to measure the same way is good testing. (a) True (b) False
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
11. 11.🧪 A paper bridge was tested three times. It held 350 g, 300 g and 250 g. What is the mean (average) load it held, in grams?
12. 12.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
13. 13.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) change only one thing (d) record every result
15. 15.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) strengthen the weak part (b) load it with coins
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) choose and draw one (d) load it with coins
18. 18.True or false: to repeat each test is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
21. 21.True or false: to skip writing results is good testing. (a) True (b) False
22. 22.True or false: to record every result is good testing. (a) True (b) False
23. 23.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) read the challenge rules (d) load it with coins
24. 24.🔢 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
25. 25.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
26. 26.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) use a new load each time (d) record every result
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.🧪 What is a prototype? (a) a broken part (b) an early test model (c) the final product (d) a sales poster
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) change lots at once (d) use the same load
30. 30.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
33. 33.🧪 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 A (c) design C
34. 34.True or false: to record every result is poor testing. (a) False (b) True
35. 35.🧪 A paper bridge was tested three times. It held 200 g, 160 g and 120 g. What is the mean (average) load it held, in grams?
36. 36.🧪 A paper bridge was tested three times. It held 220 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) build it with straws
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
40. 40.🔍 Which is the odd one out? (a) skip writing results (b) hide a failed test (c) change lots at once (d) change only one thing

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