Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 893 · 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, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) build it with straws (d) read the challenge rules
2. 2.🧪 A paper bridge was tested three times. It held 210 g, 190 g and 230 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to change lots at once is poor testing. (a) True (b) False
4. 4.True or false: to repeat each test is poor testing. (a) True (b) False
5. 5.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
6. 6.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 260 g and design C held 210 g. Which design was the weakest? (a) design B (b) design C (c) design A
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
9. 9.🧪 A paper bridge was tested three times. It held 290 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
10. 10.🔢 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) build it with straws (d) sketch three ideas
11. 11.🧪 A paper bridge was tested three times. It held 230 g, 90 g and 160 g. What is the mean (average) load it held, in grams?
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) read the challenge rules
13. 13.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
14. 14.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) hide a failed test (d) measure the same way
15. 15.True or false: to skip writing results is good testing. (a) False (b) True
16. 16.True or false: to test it only once is poor testing. (a) True (b) False
17. 17.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
18. 18.True or false: to use the same load is good testing. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change lots at once (d) change only one thing
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design C (b) design A (c) design B
21. 21.🧪 A paper bridge was tested three times. It held 240 g, 100 g and 140 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 220 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
26. 26.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
27. 27.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
28. 28.🧪 A paper bridge was tested three times. It held 210 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to use the same load is poor testing. (a) False (b) True
30. 30.🧪 What is a prototype? (a) a sales poster (b) the final product (c) an early test model (d) a broken part
31. 31.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) record every result (d) guess, do not measure
33. 33.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) choose and draw one (c) build it with straws (d) strengthen the weak part
34. 34.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
35. 35.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) guess, do not measure (d) use the same load
36. 36.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 260 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to measure the same way is poor testing. (a) True (b) False
39. 39.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to avoid testing (d) to decorate a room
40. 40.🧪 A paper bridge was tested three times. It held 440 g, 310 g and 300 g. What is the mean (average) load it held, in grams?

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