Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 286 · 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.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
2. 2.True or false: to measure the same way is poor testing. (a) True (b) False
3. 3.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
4. 4.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
5. 5.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “strengthen the weak part”? (a) strengthen the weak part (b) build it with straws
9. 9.True or false: to measure the same way is good testing. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) test it only once (b) hide a failed test (c) change lots at once (d) use the same load
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) change lots at once (c) use the same load (d) repeat each test
12. 12.🔢 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
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
14. 14.True or false: to record every result is poor testing. (a) True (b) False
15. 15.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) the final product (d) an early test model
17. 17.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
18. 18.🔍 Which is the odd one out? (a) test it only once (b) record every result (c) measure the same way (d) change only one thing
19. 19.True or false: to skip writing results is good testing. (a) False (b) True
20. 20.True or false: to test it only once is good testing. (a) True (b) False
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the strongest? (a) design C (b) design A (c) design B
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
23. 23.🧪 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 weakest? (a) design B (b) design A (c) design C
24. 24.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
25. 25.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🔢 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
28. 28.🧪 A paper bridge was tested three times. It held 270 g, 180 g and 360 g. What is the mean (average) load it held, in grams?
29. 29.True or false: to hide a failed test is poor testing. (a) True (b) False
30. 30.True or false: to guess, do not measure is good testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 210 g, 140 g and 100 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
33. 33.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) hide a failed test
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design B (b) design C (c) design A
36. 36.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
37. 37.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
38. 38.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) build it with straws (c) choose and draw one (d) read the challenge rules
40. 40.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) read the challenge rules

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