Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 419 · 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 210 g, 140 g and 160 g. What is the mean (average) load it held, in grams?
2. 2.🧪 A paper bridge was tested three times. It held 310 g, 270 g and 260 g. What is the mean (average) load it held, in grams?
3. 3.True or false: to use the same load is poor testing. (a) False (b) True
4. 4.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
5. 5.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
6. 6.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
7. 7.🔍 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
8. 8.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
9. 9.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
10. 10.🧪 A paper bridge was tested three times. It held 170 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
11. 11.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 490 g. How many more grams did it hold?
12. 12.🧪 A paper bridge was tested three times. It held 180 g, 80 g and 220 g. What is the mean (average) load it held, in grams?
13. 13.🔍 Which is the odd one out? (a) hide a failed test (b) record every result (c) test it only once (d) skip writing results
14. 14.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 280 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) read the challenge rules
18. 18.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) read the challenge rules (c) choose and draw one (d) load it with coins
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
21. 21.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
22. 22.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) hide a failed test (d) change only one thing
23. 23.🧪 A paper bridge was tested three times. It held 310 g, 180 g and 230 g. What is the mean (average) load it held, in grams?
24. 24.🧪 A paper bridge was tested three times. It held 370 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
25. 25.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) use the same load (d) use a new load each time
26. 26.🧪 The first prototype held 70 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 repeat each test? (a) good testing (b) poor testing
28. 28.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
29. 29.True or false: to test it only once is poor testing. (a) True (b) False
30. 30.True or false: to hide a failed test is poor testing. (a) True (b) False
31. 31.🧪 A paper bridge was tested three times. It held 380 g, 270 g and 280 g. What is the mean (average) load it held, in grams?
32. 32.True or false: to hide a failed test is good testing. (a) True (b) False
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design C (b) design B (c) design A
34. 34.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🔢 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
37. 37.True or false: to change lots at once is poor testing. (a) True (b) False
38. 38.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
39. 39.True or false: to test it only once is good testing. (a) True (b) False
40. 40.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing

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