Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 237 · 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.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) record every result (d) hide a failed test
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) load it with coins (b) read the challenge rules
3. 3.🧪 Why repeat a test three times? (a) it looks busy (b) the first is wrong (c) to get reliable results (d) to use more paper
4. 4.🧪 A paper bridge was tested three times. It held 350 g, 250 g and 180 g. What is the mean (average) load it held, in grams?
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
6. 6.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
7. 7.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
8. 8.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
9. 9.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) guess, do not measure (d) repeat each test
11. 11.True or false: to guess, do not measure is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) hide a failed test (d) change only one thing
13. 13.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design C (b) design A (c) design B
15. 15.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) test it only once
16. 16.True or false: to record every result is poor testing. (a) False (b) True
17. 17.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
18. 18.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
21. 21.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change only one thing (d) repeat each test
22. 22.True or false: to hide a failed test is good testing. (a) True (b) False
23. 23.True or false: to measure the same way is good testing. (a) True (b) False
24. 24.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) sketch three ideas (c) read the challenge rules (d) strengthen the weak part
25. 25.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
29. 29.🧪 A paper bridge was tested three times. It held 280 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the weakest? (a) design C (b) design A (c) design B
31. 31.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
32. 32.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) strengthen the weak part (c) sketch three ideas (d) read the challenge rules
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design C (c) design A
35. 35.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
36. 36.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
37. 37.True or false: to repeat each test is poor testing. (a) True (b) False
38. 38.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.🧪 A paper bridge was tested three times. It held 300 g, 260 g and 340 g. What is the mean (average) load it held, in grams?

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