Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 259 · 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.True or false: to repeat each test is good testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) use a new load each time (d) measure the same way
3. 3.True or false: to use a new load each time is good testing. (a) False (b) True
4. 4.True or false: to change only one thing is good testing. (a) False (b) True
5. 5.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
6. 6.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 170 g and 210 g. What is the mean (average) load it held, in grams?
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 270 g and 400 g. What is the mean (average) load it held, in grams?
9. 9.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) measure the same way (d) change only one thing
10. 10.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
11. 11.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) all of them (d) none
12. 12.True or false: to record every result is good testing. (a) True (b) False
13. 13.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
14. 14.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 450 g. How many more grams did it hold?
15. 15.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
16. 16.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
17. 17.🧪 A paper bridge was tested three times. It held 350 g, 240 g and 370 g. What is the mean (average) load it held, in grams?
18. 18.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 360 g. Which design was the strongest? (a) design A (b) design B (c) design C
20. 20.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
21. 21.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
22. 22.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
23. 23.True or false: to change only one thing is poor testing. (a) False (b) True
24. 24.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “choose and draw one”? (a) build it with straws (b) choose and draw one
26. 26.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to decorate a room (c) to avoid testing (d) to sell them at once
27. 27.🧪 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 strongest? (a) design A (b) design B (c) design C
28. 28.🔢 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
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 360 g, design B held 260 g and design C held 310 g. Which design was the weakest? (a) design B (b) design C (c) design A
30. 30.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
31. 31.🧪 Why repeat a test three times? (a) to use more paper (b) it looks busy (c) the first is wrong (d) to get reliable results
32. 32.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design B (b) design A (c) design C
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
35. 35.True or false: to hide a failed test is good testing. (a) True (b) False
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
38. 38.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
39. 39.🔍 Which is the odd one out? (a) change lots at once (b) change only one thing (c) test it only once (d) use a new load each time
40. 40.🧪 A paper bridge was tested three times. It held 250 g, 210 g and 290 g. What is the mean (average) load it held, in grams?

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