Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 96 · 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 170 g, 150 g and 130 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to test ideas cheaply (d) to sell them at once
3. 3.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
4. 4.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
5. 5.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 70 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design B (c) design C
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
12. 12.🧪 A paper bridge was tested three times. It held 440 g, 290 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
14. 14.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
15. 15.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
17. 17.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) skip writing results (d) measure the same way
18. 18.True or false: to skip writing results is poor testing. (a) True (b) False
19. 19.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
20. 20.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) test it only once (d) change lots at once
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
22. 22.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
23. 23.🧪 A paper bridge was tested three times. It held 200 g, 80 g and 170 g. What is the mean (average) load it held, in grams?
24. 24.🧪 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
25. 25.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
26. 26.True or false: to change lots at once is poor testing. (a) False (b) True
27. 27.🔢 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) choose and draw one (d) strengthen the weak part
28. 28.🧪 A paper bridge was tested three times. It held 410 g, 270 g and 310 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) measure the same way (d) record every result
30. 30.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) repeat each test (d) change only one thing
31. 31.🧪 A paper bridge was tested three times. It held 370 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
34. 34.True or false: to test it only once is poor testing. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) hide a failed test (c) use the same load (d) test it only once
36. 36.🧪 A paper bridge was tested three times. It held 260 g, 130 g and 180 g. What is the mean (average) load it held, in grams?
37. 37.True or false: to change only one thing is good testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) read the challenge rules (d) build it with straws
40. 40.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) choose and draw one (b) build it with straws

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