Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 664 · 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 is the LAST step? (a) build it with straws (b) sketch three ideas (c) strengthen the weak part (d) load it with coins
2. 2.🔍 Which is the odd one out? (a) repeat each test (b) use the same load (c) test it only once (d) measure the same way
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 350 g and design C held 400 g. Which design was the weakest? (a) design C (b) design B (c) design A
4. 4.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
5. 5.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 90 g. How many more grams did it hold?
6. 6.True or false: to guess, do not measure is poor testing. (a) True (b) False
7. 7.True or false: to measure the same way is poor testing. (a) False (b) True
8. 8.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
9. 9.🔍 Which is the odd one out? (a) record every result (b) change lots at once (c) measure the same way (d) repeat each test
10. 10.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
11. 11.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) hide a failed test (b) use the same load (c) test it only once (d) change lots at once
13. 13.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) choose and draw one (b) load it with coins (c) strengthen the weak part (d) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 170 g. What is the mean (average) load it held, in grams?
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design C (c) design B
16. 16.🔢 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
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 350 g, design B held 250 g and design C held 300 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.🧪 A paper bridge was tested three times. It held 360 g, 270 g and 210 g. What is the mean (average) load it held, in grams?
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) change lots at once (c) skip writing results (d) guess, do not measure
20. 20.🧪 A paper bridge was tested three times. It held 400 g, 280 g and 370 g. What is the mean (average) load it held, in grams?
21. 21.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 190 g and design C held 240 g. Which design was the strongest? (a) design A (b) design B (c) design C
23. 23.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
24. 24.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
25. 25.True or false: to change lots at once is poor testing. (a) False (b) True
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 390 g and design C held 340 g. Which design was the strongest? (a) design B (b) design C (c) design A
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
28. 28.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) sketch three ideas (b) strengthen the weak part (c) build it with straws (d) load it with coins
29. 29.🧪 Three prototype bridges were tested with the same method. Design A held 100 g, design B held 150 g and design C held 200 g. Which design was the strongest? (a) design B (b) design C (c) design A
30. 30.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
31. 31.True or false: to repeat each test is good testing. (a) True (b) False
32. 32.🧪 A paper bridge was tested three times. It held 340 g, 290 g and 300 g. What is the mean (average) load it held, in grams?
33. 33.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “build it with straws”? (a) build it with straws (b) choose and draw one
34. 34.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
35. 35.🧪 Why repeat a test three times? (a) it looks busy (b) to use more paper (c) the first is wrong (d) to get reliable results
36. 36.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) read the challenge rules (c) build it with straws (d) load it with coins
37. 37.🧪 A paper bridge was tested three times. It held 440 g, 340 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to test it only once is good testing. (a) False (b) True
39. 39.True or false: to record every result is good testing. (a) False (b) True
40. 40.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?

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