Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 343 · 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.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) all of them (d) two
2. 2.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
3. 3.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
4. 4.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
5. 5.🔢 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
6. 6.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
7. 7.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
8. 8.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
9. 9.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
10. 10.True or false: to test it only once is good testing. (a) False (b) True
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
12. 12.🔢 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) sketch three ideas
13. 13.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
14. 14.True or false: to repeat each test is poor testing. (a) False (b) True
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.True or false: to skip writing results is poor testing. (a) True (b) False
17. 17.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
18. 18.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) to get reliable results (d) the first is wrong
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) sketch three ideas (c) choose and draw one (d) strengthen the weak part
20. 20.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
22. 22.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
23. 23.🧪 A paper bridge was tested three times. It held 330 g, 280 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to change only one thing is poor testing. (a) False (b) True
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.True or false: to use the same load is poor testing. (a) True (b) False
27. 27.True or false: to hide a failed test is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 350 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) test it only once (d) use the same load
30. 30.True or false: to measure the same way is good testing. (a) True (b) False
31. 31.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
32. 32.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
33. 33.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) sketch three ideas
34. 34.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
35. 35.🧪 A paper bridge was tested three times. It held 210 g, 110 g and 190 g. What is the mean (average) load it held, in grams?
36. 36.🔍 Which is the odd one out? (a) use a new load each time (b) skip writing results (c) hide a failed test (d) change only one thing
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design A (b) design C (c) design B
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) measure the same way (d) repeat each test
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 220 g and 190 g. What is the mean (average) load it held, in grams?

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