Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 264 · 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 200 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
2. 2.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) use a new load each time (d) change lots at once
3. 3.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) it looks busy (d) to use more paper
4. 4.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
5. 5.True or false: to change lots at once is good testing. (a) False (b) True
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) sketch three ideas (d) read the challenge rules
7. 7.True or false: to change only one thing is poor testing. (a) True (b) False
8. 8.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
9. 9.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
10. 10.🧪 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 strongest? (a) design A (b) design C (c) design B
11. 11.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) test it only once (b) repeat each test (c) use the same load (d) record every result
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
14. 14.🔍 Which is the odd one out? (a) record every result (b) hide a failed test (c) measure the same way (d) change only one thing
15. 15.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
16. 16.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) change only one thing
17. 17.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
18. 18.True or false: to hide a failed test is poor testing. (a) True (b) False
19. 19.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
22. 22.True or false: to repeat each test is poor testing. (a) False (b) True
23. 23.True or false: to repeat each test is good testing. (a) False (b) True
24. 24.True or false: to change lots at once is poor testing. (a) False (b) True
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) sketch three ideas
26. 26.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the weakest? (a) design B (b) design C (c) design A
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
30. 30.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
31. 31.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) record every result (d) use the same load
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
34. 34.🧪 A paper bridge was tested three times. It held 450 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
36. 36.True or false: to use the same load is good testing. (a) False (b) True
37. 37.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) record every result (d) change only one thing
39. 39.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
40. 40.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing

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