Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 677 · 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.🧪 What is a prototype? (a) an early test model (b) a broken part (c) a sales poster (d) the final product
2. 2.True or false: to test it only once is good testing. (a) True (b) False
3. 3.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
4. 4.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 360 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) two (b) all of them (c) one (d) none
6. 6.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 270 g. What is the mean (average) load it held, in grams?
7. 7.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
8. 8.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
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.True or false: to measure the same way is poor testing. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) skip writing results (d) repeat each test
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design C (b) design A (c) design B
13. 13.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) test it only once (d) repeat each test
14. 14.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
15. 15.True or false: to use the same load is poor testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) choose and draw one (b) strengthen the weak part
18. 18.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
19. 19.True or false: to repeat each test is poor testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) skip writing results (d) use the same load
21. 21.True or false: to repeat each test is good testing. (a) False (b) True
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) sketch three ideas
23. 23.True or false: to skip writing results is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
25. 25.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
26. 26.🧪 A paper bridge was tested three times. It held 270 g, 220 g and 170 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
28. 28.🧪 A paper bridge was tested three times. It held 420 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
29. 29.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
32. 32.🧪 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
33. 33.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to avoid testing (c) to sell them at once (d) to test ideas cheaply
34. 34.True or false: to change only one thing is poor testing. (a) False (b) True
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 320 g and design C held 270 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.True or false: to record every result is poor testing. (a) True (b) False
37. 37.True or false: to record every result is good testing. (a) False (b) True
38. 38.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
39. 39.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 70 g and 160 g. What is the mean (average) load it held, in grams?

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