Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 891 · 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.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
2. 2.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
3. 3.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
4. 4.True or false: to use a new load each time is poor testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “load it with coins”? (a) load it with coins (b) build it with straws
6. 6.🔢 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
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) the first is wrong (d) to use more paper
9. 9.True or false: to test it only once is good testing. (a) False (b) True
10. 10.True or false: to guess, do not measure is poor testing. (a) True (b) False
11. 11.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 230 g. What is the mean (average) load it held, in grams?
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design A (b) design C (c) design B
14. 14.🧪 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
15. 15.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
16. 16.🔢 To build and test a straw bridge, which is the FIRST step? (a) load it with coins (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
17. 17.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
18. 18.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) strengthen the weak part
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) measure the same way (c) repeat each test (d) use the same load
20. 20.🧪 A paper bridge was tested three times. It held 270 g, 230 g and 190 g. What is the mean (average) load it held, in grams?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 400 g. Which design was the weakest? (a) design C (b) design B (c) design A
22. 22.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
23. 23.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
24. 24.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
25. 25.🧪 A paper bridge was tested three times. It held 170 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) guess, do not measure (b) use a new load each time (c) test it only once (d) measure the same way
27. 27.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
28. 28.True or false: to measure the same way is good testing. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) use a new load each time (d) use the same load
30. 30.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
32. 32.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) hide a failed test
33. 33.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
34. 34.True or false: to change only one thing is poor testing. (a) True (b) False
35. 35.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) record every result (c) repeat each test (d) use the same load
38. 38.🔢 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) strengthen the weak part (d) choose and draw one
39. 39.True or false: to measure the same way is poor testing. (a) False (b) True
40. 40.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?

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