Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 792 · 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 270 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
2. 2.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) test it only once (d) measure the same way
3. 3.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
4. 4.True or false: to skip writing results is poor testing. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) use a new load each time (d) measure the same way
6. 6.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
7. 7.True or false: to skip writing results is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
9. 9.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
10. 10.True or false: to record every result is good testing. (a) True (b) False
11. 11.True or false: to record every result is poor testing. (a) False (b) True
12. 12.True or false: to guess, do not measure is good testing. (a) True (b) False
13. 13.🔢 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
14. 14.🧪 A paper bridge was tested three times. It held 290 g, 190 g and 90 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to change lots at once is poor testing. (a) False (b) True
16. 16.True or false: to repeat each test is poor testing. (a) True (b) False
17. 17.🧪 A paper bridge was tested three times. It held 370 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
18. 18.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design B (b) design A (c) design C
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design A (b) design C (c) design B
20. 20.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
21. 21.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
23. 23.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
24. 24.True or false: to repeat each test is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
27. 27.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
28. 28.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to use more paper (d) to get reliable results
29. 29.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) load it with coins (d) strengthen the weak part
30. 30.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the strongest? (a) design C (b) design A (c) design B
33. 33.🧪 A paper bridge was tested three times. It held 340 g, 240 g and 320 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the weakest? (a) design A (b) design B (c) design C
36. 36.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 130 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) build it with straws (b) strengthen the weak part
38. 38.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
39. 39.🔍 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
40. 40.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?

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