Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 438 · 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, 190 g and 240 g. What is the mean (average) load it held, in grams?
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) none (c) two (d) all of them
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) change lots at once (d) repeat each test
5. 5.🧪 A paper bridge was tested three times. It held 270 g, 140 g and 310 g. What is the mean (average) load it held, in grams?
6. 6.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
7. 7.True or false: to record every result is poor testing. (a) True (b) False
8. 8.🔢 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) read the challenge rules (d) choose and draw one
9. 9.True or false: to hide a failed test is poor testing. (a) True (b) False
10. 10.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 80 g. What is the mean (average) load it held, in grams?
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) hide a failed test
12. 12.True or false: to guess, do not measure is good testing. (a) False (b) True
13. 13.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
14. 14.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) guess, do not measure
15. 15.🔢 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) build it with straws
16. 16.🧪 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
17. 17.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
18. 18.True or false: to change only one thing is good testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) change only one thing (d) use a new load each time
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 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 360 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
22. 22.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change lots at once (d) repeat each test
23. 23.True or false: to repeat each test is poor testing. (a) False (b) True
24. 24.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
25. 25.🔍 Which is the odd one out? (a) record every result (b) change only one thing (c) measure the same way (d) test it only once
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 110 g and 270 g. What is the mean (average) load it held, in grams?
27. 27.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to use more paper (d) to get reliable results
28. 28.🔍 Which is the odd one out? (a) use a new load each time (b) test it only once (c) measure the same way (d) change lots at once
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
31. 31.True or false: to skip writing results is poor testing. (a) False (b) True
32. 32.True or false: to use a new load each time is good testing. (a) False (b) True
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) load it with coins (b) strengthen the weak part (c) build it with straws (d) sketch three ideas
34. 34.🧪 A paper bridge was tested three times. It held 370 g, 310 g and 280 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
36. 36.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
37. 37.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “choose and draw one”? (a) sketch three ideas (b) choose and draw one
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design B (c) design C
39. 39.🔍 Which is the odd one out? (a) hide a failed test (b) use a new load each time (c) skip writing results (d) record every result
40. 40.🧪 A paper bridge was tested three times. It held 270 g, 160 g and 290 g. What is the mean (average) load it held, in grams?

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