Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 756 · 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.🧪 A paper bridge was tested three times. It held 260 g, 200 g and 320 g. What is the mean (average) load it held, in grams?
2. 2.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the weakest? (a) design B (b) design A (c) design C
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) hide a failed test (c) use the same load (d) change only one thing
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
7. 7.🧪 A paper bridge was tested three times. It held 280 g, 250 g and 220 g. What is the mean (average) load it held, in grams?
8. 8.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) measure the same way (d) skip writing results
9. 9.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
10. 10.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
11. 11.True or false: to change lots at once is good testing. (a) False (b) True
12. 12.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
13. 13.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 160 g and design C held 210 g. Which design was the weakest? (a) design C (b) design B (c) design A
14. 14.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 370 g. Which design was the strongest? (a) design C (b) design A (c) design B
15. 15.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) read the challenge rules (b) choose and draw one
16. 16.🧪 What is a prototype? (a) an early test model (b) a sales poster (c) a broken part (d) the final product
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 230 g and design C held 330 g. Which design was the strongest? (a) design A (b) design C (c) design B
18. 18.🧪 In a fair test, how many things do you change at a time? (a) one (b) two (c) all of them (d) none
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 250 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
20. 20.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to test ideas cheaply (d) to decorate a room
21. 21.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) read the challenge rules (b) choose and draw one
22. 22.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) it looks busy (d) to get reliable results
23. 23.True or false: to record every result is poor testing. (a) False (b) True
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) read the challenge rules (d) build it with straws
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) read the challenge rules (d) sketch three ideas
28. 28.🧪 A paper bridge was tested three times. It held 180 g, 180 g and 180 g. What is the mean (average) load it held, in grams?
29. 29.🧪 A paper bridge was tested three times. It held 320 g, 180 g and 280 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
31. 31.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) load it with coins (b) sketch three ideas
32. 32.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “load it with coins”? (a) strengthen the weak part (b) load it with coins
34. 34.🧪 A paper bridge was tested three times. It held 360 g, 210 g and 210 g. What is the mean (average) load it held, in grams?
35. 35.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 350 g. How many more grams did it hold?
36. 36.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 130 g and design C held 230 g. Which design was the strongest? (a) design B (b) design A (c) design C
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.True or false: to record every result is good testing. (a) True (b) False
40. 40.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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