Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 982 · 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.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
2. 2.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.True or false: to guess, do not measure is good testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) strengthen the weak part (c) choose and draw one (d) build it with straws
6. 6.🧪 A paper bridge was tested three times. It held 210 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
7. 7.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design B (b) design A (c) design C
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use a new load each time (d) measure the same way
10. 10.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) read the challenge rules (b) sketch three ideas
13. 13.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) load it with coins (c) build it with straws (d) strengthen the weak part
14. 14.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
15. 15.🔍 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
16. 16.🧪 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
17. 17.🧪 A paper bridge was tested three times. It held 300 g, 230 g and 160 g. What is the mean (average) load it held, in grams?
18. 18.🧪 A paper bridge was tested three times. It held 180 g, 130 g and 200 g. What is the mean (average) load it held, in grams?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the strongest? (a) design B (b) design C (c) design A
20. 20.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
21. 21.True or false: to record every result is good testing. (a) True (b) False
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the weakest? (a) design C (b) design B (c) design A
23. 23.True or false: to measure the same way is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) skip writing results (d) repeat each test
26. 26.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
27. 27.True or false: to test it only once is good testing. (a) False (b) True
28. 28.True or false: to change lots at once is poor testing. (a) False (b) True
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 390 g and design C held 290 g. Which design was the weakest? (a) design A (b) design B (c) design C
30. 30.🧪 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
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 250 g and 360 g. What is the mean (average) load it held, in grams?
32. 32.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) repeat each test (d) guess, do not measure
34. 34.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) test it only once (d) guess, do not measure
35. 35.True or false: to use a new load each time is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 150 g, 90 g and 210 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) load it with coins
39. 39.🧪 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?
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) choose and draw one

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