Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 754 · 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 230 g, 120 g and 190 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) record every result (d) measure the same way
3. 3.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
4. 4.True or false: to skip writing results is good testing. (a) True (b) False
5. 5.True or false: to use a new load each time is poor testing. (a) False (b) True
6. 6.True or false: to change only one thing is good testing. (a) False (b) True
7. 7.🧪 A paper bridge was tested three times. It held 310 g, 240 g and 380 g. What is the mean (average) load it held, in grams?
8. 8.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
9. 9.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
10. 10.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 220 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) change lots at once (d) use the same load
12. 12.True or false: to use a new load each time is good testing. (a) True (b) False
13. 13.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
14. 14.🧪 A paper bridge was tested three times. It held 210 g, 80 g and 190 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
16. 16.True or false: to guess, do not measure is poor testing. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) test it only once (b) change lots at once (c) use the same load (d) hide a failed test
18. 18.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) choose and draw one (b) sketch three ideas
19. 19.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) hide a failed test (d) measure the same way
20. 20.🧪 A paper bridge was tested three times. It held 280 g, 190 g and 370 g. What is the mean (average) load it held, in grams?
21. 21.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
22. 22.🔍 Which is the odd one out? (a) test it only once (b) measure the same way (c) record every result (d) change only one thing
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 120 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) strengthen the weak part
25. 25.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) strengthen the weak part
27. 27.True or false: to use the same load is poor testing. (a) True (b) False
28. 28.🧪 Why do engineers make prototypes? (a) to decorate a room (b) to test ideas cheaply (c) to avoid testing (d) to sell them at once
29. 29.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
30. 30.True or false: to hide a failed test is poor testing. (a) True (b) False
31. 31.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) an early test model (d) the final product
32. 32.🔢 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) sketch three ideas (d) build it with straws
33. 33.🧪 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 weakest? (a) design B (b) design A (c) design C
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 180 g and design C held 280 g. Which design was the strongest? (a) design A (b) design B (c) design C
35. 35.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
36. 36.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 300 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) change only one thing (d) record every result
38. 38.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 110 g. Which design was the strongest? (a) design B (b) design A (c) design C

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