Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 795 · 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 record every result is poor testing. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) measure the same way (c) use a new load each time (d) use the same load
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 290 g. Which design was the strongest? (a) design C (b) design B (c) design A
4. 4.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
5. 5.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
6. 6.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
7. 7.True or false: to use the same load is good testing. (a) False (b) True
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🧪 What is a prototype? (a) an early test model (b) the final product (c) a sales poster (d) a broken part
10. 10.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 200 g and design C held 150 g. Which design was the weakest? (a) design C (b) design B (c) design A
13. 13.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
15. 15.🔢 To build and test a straw bridge, which is the LAST step? (a) read the challenge rules (b) choose and draw one (c) sketch three ideas (d) strengthen the weak part
16. 16.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
18. 18.True or false: to use a new load each time is good testing. (a) True (b) False
19. 19.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
20. 20.🧪 A paper bridge was tested three times. It held 390 g, 230 g and 280 g. What is the mean (average) load it held, in grams?
21. 21.True or false: to hide a failed test is good testing. (a) True (b) False
22. 22.True or false: to repeat each test is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) use the same load (d) hide a failed test
24. 24.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
25. 25.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
27. 27.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
28. 28.🧪 Why repeat a test three times? (a) to get reliable results (b) it looks busy (c) to use more paper (d) the first is wrong
29. 29.True or false: to guess, do not measure is poor testing. (a) True (b) False
30. 30.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
32. 32.🔍 Which is the odd one out? (a) change only one thing (b) hide a failed test (c) change lots at once (d) use a new load each time
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 360 g and design C held 260 g. Which design was the strongest? (a) design C (b) design A (c) design B
34. 34.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) repeat each test (d) hide a failed test
35. 35.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
36. 36.🧪 A paper bridge was tested three times. It held 380 g, 240 g and 220 g. What is the mean (average) load it held, in grams?
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) read the challenge rules
38. 38.🔍 Which is the odd one out? (a) record every result (b) test it only once (c) use the same load (d) repeat each test
39. 39.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) sketch three ideas (c) load it with coins (d) build it with straws
40. 40.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 160 g. How many more grams did it hold?

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