Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 394 · 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.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) repeat each test (d) skip writing results
2. 2.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 100 g and design C held 150 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 150 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
7. 7.🔍 Which is the odd one out? (a) change lots at once (b) use a new load each time (c) test it only once (d) use the same load
8. 8.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
9. 9.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
10. 10.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to test ideas cheaply (c) to decorate a room (d) to avoid testing
11. 11.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) repeat each test (d) record every result
12. 12.🧪 A paper bridge was tested three times. It held 400 g, 270 g and 290 g. What is the mean (average) load it held, in grams?
13. 13.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) read the challenge rules (b) build it with straws (c) sketch three ideas (d) strengthen the weak part
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.True or false: to measure the same way is poor testing. (a) False (b) True
16. 16.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
17. 17.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
18. 18.🧪 A paper bridge was tested three times. It held 370 g, 230 g and 270 g. What is the mean (average) load it held, in grams?
19. 19.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
20. 20.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
21. 21.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
22. 22.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) two (d) one
23. 23.🧪 A paper bridge was tested three times. It held 280 g, 120 g and 200 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to test it only once is poor testing. (a) False (b) True
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 150 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
27. 27.🧪 A paper bridge was tested three times. It held 310 g, 300 g and 320 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the weakest? (a) design A (b) design C (c) design B
29. 29.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 150 g. What is the mean (average) load it held, in grams?
30. 30.🔍 Which is the odd one out? (a) change lots at once (b) record every result (c) skip writing results (d) test it only once
31. 31.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🧪 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 C (b) design B (c) design A
33. 33.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) change lots at once (d) measure the same way
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the strongest? (a) design C (b) design B (c) design A
36. 36.🔢 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
37. 37.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
38. 38.🧪 A paper bridge was tested three times. It held 340 g, 210 g and 320 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
40. 40.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 390 g. How many more grams did it hold?

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