Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 281 · 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 70 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
2. 2.True or false: to hide a failed test is good testing. (a) True (b) False
3. 3.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to decorate a room (d) to avoid testing
4. 4.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
5. 5.🔍 Which is the odd one out? (a) use the same load (b) change lots at once (c) repeat each test (d) change only one thing
6. 6.True or false: to record every result is poor testing. (a) True (b) False
7. 7.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
8. 8.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) load it with coins (d) strengthen the weak part
9. 9.🧪 A paper bridge was tested three times. It held 400 g, 310 g and 220 g. What is the mean (average) load it held, in grams?
10. 10.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
11. 11.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 150 g. Which design was the strongest? (a) design B (b) design C (c) design A
13. 13.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) load it with coins
17. 17.True or false: to change lots at once is good testing. (a) True (b) False
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
20. 20.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) measure the same way (d) guess, do not measure
21. 21.🧪 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?
22. 22.True or false: to change only one thing is good testing. (a) True (b) False
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 100 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
24. 24.🧪 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 C (c) design B
25. 25.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
26. 26.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) use the same load (d) repeat each test
27. 27.🧪 A paper bridge was tested three times. It held 330 g, 260 g and 190 g. What is the mean (average) load it held, in grams?
28. 28.True or false: to guess, do not measure is good testing. (a) True (b) False
29. 29.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
30. 30.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) hide a failed test (b) guess, do not measure (c) repeat each test (d) skip writing results
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
34. 34.🧪 A paper bridge was tested three times. It held 300 g, 120 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
36. 36.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
37. 37.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) record every result (d) test it only once
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas

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