Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 499 · 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.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) guess, do not measure
3. 3.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
4. 4.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
5. 5.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
6. 6.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) guess, do not measure (d) use the same load
7. 7.🧪 A paper bridge was tested three times. It held 330 g, 330 g and 330 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 180 g, 100 g and 170 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 190 g, 150 g and 110 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to use a new load each time is good testing. (a) True (b) False
11. 11.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
12. 12.🧪 A paper bridge was tested three times. It held 180 g, 140 g and 130 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to hide a failed test is poor testing. (a) False (b) True
14. 14.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 150 g. Which design was the strongest? (a) design C (b) design B (c) design A
16. 16.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 290 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.True or false: to measure the same way is poor testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) load it with coins
21. 21.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) change lots at once
22. 22.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to sell them at once (c) to avoid testing (d) to test ideas cheaply
23. 23.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
24. 24.🧪 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 A (c) design B
25. 25.🔢 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
26. 26.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) build it with straws
28. 28.🧪 A paper bridge was tested three times. It held 240 g, 170 g and 160 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to change only one thing is good testing. (a) False (b) True
30. 30.True or false: to repeat each test is poor testing. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) test it only once (d) skip writing results
32. 32.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) none (d) one
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
35. 35.True or false: to skip writing results is good testing. (a) False (b) True
36. 36.True or false: to record every result is poor testing. (a) False (b) True
37. 37.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) read the challenge rules
38. 38.🔢 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
39. 39.True or false: to use the same load is good testing. (a) False (b) True
40. 40.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) strengthen the weak part (c) build it with straws (d) sketch three ideas

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