Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 310 · 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.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) read the challenge rules (b) strengthen the weak part
2. 2.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
3. 3.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) load it with coins (b) choose and draw one
4. 4.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
5. 5.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “build it with straws”? (a) build it with straws (b) load it with coins
6. 6.🧪 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 weakest? (a) design B (b) design C (c) design A
7. 7.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use the same load (d) change only one thing
8. 8.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 100 g and 200 g. What is the mean (average) load it held, in grams?
10. 10.🧪 In a fair test, how many things do you change at a time? (a) two (b) one (c) none (d) all of them
11. 11.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
12. 12.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
13. 13.True or false: to skip writing results is good testing. (a) False (b) True
14. 14.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
15. 15.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
16. 16.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) sketch three ideas
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 290 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.True or false: to use the same load is poor testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) guess, do not measure (b) record every result (c) measure the same way (d) change only one thing
20. 20.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) strengthen the weak part
21. 21.🧪 A paper bridge was tested three times. It held 420 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
22. 22.True or false: to hide a failed test is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) use a new load each time (d) hide a failed test
24. 24.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
25. 25.🔢 To build and test a straw bridge, which is the LAST step? (a) load it with coins (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 200 g and design C held 250 g. Which design was the weakest? (a) design A (b) design C (c) design B
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design C (b) design B (c) design A
29. 29.🔍 Which is the odd one out? (a) test it only once (b) change only one thing (c) guess, do not measure (d) change lots at once
30. 30.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) read the challenge rules
32. 32.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 270 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
33. 33.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
34. 34.🔍 Which is the odd one out? (a) use the same load (b) skip writing results (c) hide a failed test (d) change lots at once
35. 35.🧪 Why repeat a test three times? (a) the first is wrong (b) it looks busy (c) to get reliable results (d) to use more paper
36. 36.🔍 Which is the odd one out? (a) repeat each test (b) change lots at once (c) change only one thing (d) use the same load
37. 37.🧪 A paper bridge was tested three times. It held 400 g, 250 g and 310 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 330 g, design B held 280 g and design C held 380 g. Which design was the weakest? (a) design C (b) design B (c) design A
39. 39.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) choose and draw one
40. 40.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?

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