Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 680 · 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.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
2. 2.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
3. 3.True or false: to record every result is good testing. (a) False (b) True
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) the first is wrong (d) to use more paper
5. 5.🧪 A paper bridge was tested three times. It held 260 g, 160 g and 180 g. What is the mean (average) load it held, in grams?
6. 6.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) record every result (d) test it only once
7. 7.🧪 What is a prototype? (a) a broken part (b) a sales poster (c) the final product (d) an early test model
8. 8.🔍 Which is the odd one out? (a) test it only once (b) use a new load each time (c) change only one thing (d) guess, do not measure
9. 9.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) repeat each test (d) use a new load each time
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 380 g and design C held 280 g. Which design was the strongest? (a) design B (b) design C (c) design A
11. 11.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) read the challenge rules
13. 13.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
14. 14.True or false: to change lots at once is poor testing. (a) False (b) True
15. 15.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
16. 16.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
17. 17.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
18. 18.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) choose and draw one (d) read the challenge rules
19. 19.🔢 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
20. 20.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
21. 21.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) guess, do not measure (d) test it only once
22. 22.True or false: to repeat each test is good testing. (a) True (b) False
23. 23.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
25. 25.🧪 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 weakest? (a) design A (b) design C (c) design B
26. 26.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) choose and draw one (b) load it with coins
27. 27.🧪 The first prototype held 190 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design A (c) design C
29. 29.True or false: to change lots at once is good testing. (a) True (b) False
30. 30.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 250 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
32. 32.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 270 g, 170 g and 220 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
35. 35.True or false: to record every result is poor testing. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) hide a failed test (b) measure the same way (c) skip writing results (d) use a new load each time
37. 37.True or false: to use the same load is poor testing. (a) False (b) True
38. 38.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
39. 39.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
40. 40.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) skip writing results (d) test it only once

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