Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 209 · 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 test it only once? (a) poor testing (b) good testing
2. 2.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
4. 4.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
5. 5.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
6. 6.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
7. 7.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 280 g and design C held 230 g. Which design was the weakest? (a) design C (b) design A (c) design B
8. 8.True or false: to use the same load is poor testing. (a) False (b) True
9. 9.🔢 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
10. 10.True or false: to change only one thing is poor testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 160 g. Which design was the strongest? (a) design B (b) design C (c) design A
12. 12.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) it looks busy (d) to use more paper
13. 13.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “build it with straws”? (a) build it with straws (b) strengthen the weak part
14. 14.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 240 g and design C held 190 g. Which design was the weakest? (a) design C (b) design A (c) design B
16. 16.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
17. 17.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) sketch three ideas
18. 18.🔍 Which is the odd one out? (a) change lots at once (b) measure the same way (c) use a new load each time (d) guess, do not measure
19. 19.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
20. 20.🔍 Which is the odd one out? (a) record every result (b) use the same load (c) skip writing results (d) repeat each test
21. 21.True or false: to skip writing results is poor testing. (a) False (b) True
22. 22.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
23. 23.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
24. 24.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
25. 25.🧪 A paper bridge was tested three times. It held 190 g, 140 g and 240 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 160 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
28. 28.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
29. 29.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
30. 30.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) choose and draw one (c) read the challenge rules (d) build it with straws
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 390 g, design B held 340 g and design C held 290 g. Which design was the weakest? (a) design B (b) design A (c) design C
32. 32.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
33. 33.True or false: to measure the same way is poor testing. (a) True (b) False
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
35. 35.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) record every result (d) test it only once
37. 37.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) build it with straws (c) strengthen the weak part (d) choose and draw one
38. 38.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “read the challenge rules”? (a) load it with coins (b) read the challenge rules
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 120 g and design C held 220 g. Which design was the weakest? (a) design C (b) design A (c) design B
40. 40.True or false: to skip writing results is good testing. (a) False (b) True

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