Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 562 · 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.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
2. 2.🧪 A paper bridge was tested three times. It held 310 g, 200 g and 120 g. What is the mean (average) load it held, in grams?
3. 3.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
4. 4.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
5. 5.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
6. 6.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to test ideas cheaply (d) to avoid testing
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) choose and draw one
9. 9.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
10. 10.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) hide a failed test (d) repeat each test
11. 11.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) load it with coins (c) choose and draw one (d) strengthen the weak part
12. 12.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) strengthen the weak part (d) load it with coins
13. 13.True or false: to change lots at once is poor testing. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) hide a failed test (b) change only one thing (c) record every result (d) repeat each test
15. 15.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
16. 16.🧪 A paper bridge was tested three times. It held 210 g, 150 g and 180 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the weakest? (a) design A (b) design B (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to measure the same way is good testing. (a) True (b) False
20. 20.True or false: to measure the same way is poor testing. (a) True (b) False
21. 21.True or false: to use the same load is poor testing. (a) False (b) True
22. 22.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
23. 23.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
25. 25.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
26. 26.True or false: to repeat each test is poor testing. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use a new load each time (d) change only one thing
28. 28.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design C (b) design B (c) design A
30. 30.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design B (b) design A (c) design C
32. 32.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
34. 34.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) measure the same way (d) skip writing results
35. 35.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
36. 36.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
37. 37.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) repeat each test (d) use the same load
38. 38.True or false: to guess, do not measure is good testing. (a) False (b) True
39. 39.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 330 g. What is the mean (average) load it held, in grams?
40. 40.🧪 A paper bridge was tested three times. It held 340 g, 250 g and 280 g. What is the mean (average) load it held, in grams?

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