Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 466 · 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 330 g, 270 g and 390 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
3. 3.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) record every result (d) repeat each test
4. 4.True or false: to measure the same way is poor testing. (a) True (b) False
5. 5.🧪 A paper bridge was tested three times. It held 250 g, 130 g and 70 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 360 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 310 g. How many more grams did it hold?
8. 8.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) to get reliable results (d) the first is wrong
9. 9.🧪 A paper bridge was tested three times. It held 260 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
10. 10.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to sell them at once (d) to test ideas cheaply
11. 11.🔢 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
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) read the challenge rules
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design B (b) design C (c) design A
14. 14.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
15. 15.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) measure the same way (d) skip writing results
16. 16.True or false: to change lots at once is good testing. (a) True (b) False
17. 17.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
19. 19.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
20. 20.🧪 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 strongest? (a) design C (b) design A (c) design B
21. 21.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) build it with straws
22. 22.True or false: to test it only once is good testing. (a) True (b) False
23. 23.🔢 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
24. 24.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) use a new load each time (d) skip writing results
25. 25.🧪 A paper bridge was tested three times. It held 230 g, 190 g and 240 g. What is the mean (average) load it held, in grams?
26. 26.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) hide a failed test (d) record every result
28. 28.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
29. 29.🔢 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
30. 30.🧪 A paper bridge was tested three times. It held 380 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
31. 31.🧪 A paper bridge was tested three times. It held 440 g, 300 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) record every result
33. 33.True or false: to measure the same way is good testing. (a) True (b) False
34. 34.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) none (d) all of them
35. 35.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
36. 36.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) build it with straws
37. 37.🧪 A paper bridge was tested three times. It held 310 g, 310 g and 310 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
39. 39.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) use the same load
40. 40.🧪 A paper bridge was tested three times. It held 230 g, 160 g and 300 g. What is the mean (average) load it held, in grams?

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