Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 132 · 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) record every result (b) change only one thing (c) use the same load (d) change lots at once
2. 2.🧪 In a fair test, how many things do you change at a time? (a) one (b) all of them (c) none (d) two
3. 3.🧪 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
4. 4.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) read the challenge rules (b) choose and draw one (c) load it with coins (d) sketch three ideas
5. 5.True or false: to use the same load is good testing. (a) True (b) False
6. 6.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
7. 7.True or false: to use the same load is poor testing. (a) True (b) False
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 270 g. What is the mean (average) load it held, in grams?
9. 9.🧪 A paper bridge was tested three times. It held 270 g, 210 g and 300 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) skip writing results (d) change only one thing
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 210 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C
12. 12.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 130 g. How many more grams did it hold?
13. 13.True or false: to change lots at once is good testing. (a) True (b) False
14. 14.True or false: to skip writing results is good testing. (a) True (b) False
15. 15.True or false: to repeat each test is good testing. (a) True (b) False
16. 16.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) choose and draw one
17. 17.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
18. 18.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
19. 19.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
20. 20.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
21. 21.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
22. 22.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
23. 23.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) use a new load each time (d) record every result
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 300 g and design C held 350 g. Which design was the strongest? (a) design B (b) design C (c) design A
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 240 g and 420 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 300 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
27. 27.🧪 A paper bridge was tested three times. It held 360 g, 250 g and 170 g. What is the mean (average) load it held, in grams?
28. 28.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) the final product (d) a broken part
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) guess, do not measure (d) record every result
30. 30.🔢 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) strengthen the weak part (d) load it with coins
31. 31.🧪 A paper bridge was tested three times. It held 390 g, 250 g and 380 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 270 g, design B held 170 g and design C held 220 g. Which design was the weakest? (a) design C (b) design B (c) design A
33. 33.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the weakest? (a) design C (b) design A (c) design B
35. 35.🧪 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 B (b) design C (c) design A
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) use a new load each time (c) measure the same way (d) use the same load
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 260 g and 360 g. What is the mean (average) load it held, in grams?
38. 38.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) load it with coins
39. 39.True or false: to record every result is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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