Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 693 · 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.🧪 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
2. 2.🧪 A paper bridge was tested three times. It held 350 g, 230 g and 350 g. What is the mean (average) load it held, in grams?
3. 3.🧪 A paper bridge was tested three times. It held 190 g, 100 g and 220 g. What is the mean (average) load it held, in grams?
4. 4.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
5. 5.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design C (b) design B (c) design A
7. 7.True or false: to use the same load is poor testing. (a) True (b) False
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
9. 9.True or false: to measure the same way is good testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 290 g, 150 g and 310 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
12. 12.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
13. 13.🔢 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
14. 14.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
15. 15.True or false: to measure the same way is poor testing. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) guess, do not measure (b) test it only once (c) measure the same way (d) skip writing results
17. 17.True or false: to use the same load is good testing. (a) True (b) False
18. 18.True or false: to guess, do not measure is poor testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) use a new load each time
20. 20.True or false: to record every result is good testing. (a) False (b) True
21. 21.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) hide a failed test (d) change lots at once
23. 23.🧪 A paper bridge was tested three times. It held 420 g, 310 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to use a new load each time is poor testing. (a) True (b) False
25. 25.True or false: to repeat each test is good testing. (a) False (b) True
26. 26.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
28. 28.🧪 A paper bridge was tested three times. It held 190 g, 160 g and 130 g. What is the mean (average) load it held, in grams?
29. 29.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
30. 30.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) change only one thing
31. 31.🧪 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 strongest? (a) design C (b) design A (c) design B
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 250 g. Which design was the strongest? (a) design A (b) design B (c) design C
33. 33.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) choose and draw one
34. 34.True or false: to skip writing results is poor testing. (a) True (b) False
35. 35.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
36. 36.🔍 Which is the odd one out? (a) measure the same way (b) record every result (c) repeat each test (d) skip writing results
37. 37.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
38. 38.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?

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