Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 713 · 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 310 g, 210 g and 260 g. What is the mean (average) load it held, in grams?
2. 2.🔍 Which is the odd one out? (a) guess, do not measure (b) repeat each test (c) change only one thing (d) measure the same way
3. 3.🧪 A paper bridge was tested three times. It held 250 g, 140 g and 60 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) record every result (b) measure the same way (c) use the same load (d) test it only once
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
6. 6.True or false: to repeat each test is poor testing. (a) False (b) True
7. 7.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) sketch three ideas (d) build it with straws
8. 8.🧪 A paper bridge was tested three times. It held 280 g, 240 g and 200 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
11. 11.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
12. 12.True or false: to change only one thing is good testing. (a) False (b) True
13. 13.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
14. 14.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) measure the same way (d) hide a failed test
15. 15.🧪 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
16. 16.True or false: to change lots at once is poor testing. (a) False (b) True
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
18. 18.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) change lots at once (d) repeat each test
19. 19.True or false: to change only one thing is poor testing. (a) False (b) True
20. 20.True or false: to measure the same way is good testing. (a) True (b) False
21. 21.🧪 In a fair test, how many things do you change at a time? (a) none (b) two (c) one (d) all of them
22. 22.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
23. 23.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
24. 24.🧪 A paper bridge was tested three times. It held 290 g, 200 g and 380 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) guess, do not measure (d) skip writing results
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the strongest? (a) design C (b) design B (c) design A
27. 27.True or false: to repeat each test is good testing. (a) True (b) False
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design B (b) design C (c) design A
29. 29.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
31. 31.True or false: to skip writing results is poor testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 260 g, 190 g and 270 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
34. 34.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) strengthen the weak part
35. 35.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) read the challenge rules (c) choose and draw one (d) load it with coins
36. 36.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
37. 37.🧪 A paper bridge was tested three times. It held 250 g, 80 g and 180 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
39. 39.True or false: to use the same load is poor testing. (a) True (b) False
40. 40.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “strengthen the weak part”? (a) choose and draw one (b) strengthen the weak part

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