Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 261 · 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.🧪 The first prototype held 150 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
2. 2.🧪 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
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) test it only once (c) change lots at once (d) guess, do not measure
5. 5.🔍 Which is the odd one out? (a) skip writing results (b) test it only once (c) repeat each test (d) use a new load each time
6. 6.True or false: to change only one thing is poor testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
8. 8.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) read the challenge rules
9. 9.🧪 A paper bridge was tested three times. It held 230 g, 150 g and 280 g. What is the mean (average) load it held, in grams?
10. 10.True or false: to skip writing results is good testing. (a) False (b) True
11. 11.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
12. 12.🔍 Which is the odd one out? (a) measure the same way (b) skip writing results (c) record every result (d) change only one thing
13. 13.🔍 Which is the odd one out? (a) use the same load (b) repeat each test (c) measure the same way (d) test it only once
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
15. 15.🧪 A paper bridge was tested three times. It held 270 g, 100 g and 230 g. What is the mean (average) load it held, in grams?
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) sketch three ideas (d) load it with coins
17. 17.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
18. 18.True or false: to guess, do not measure is good testing. (a) True (b) False
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 340 g and design C held 290 g. Which design was the strongest? (a) design A (b) design C (c) design B
20. 20.🧪 Is it good or poor testing to repeat each test? (a) poor testing (b) good testing
21. 21.🧪 A paper bridge was tested three times. It held 360 g, 170 g and 250 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) load it with coins (c) build it with straws (d) read the challenge rules
23. 23.🧪 Three prototype bridges were tested with the same method. Design A held 400 g, design B held 350 g and design C held 300 g. Which design was the strongest? (a) design A (b) design C (c) design B
24. 24.🧪 A paper bridge was tested three times. It held 260 g, 220 g and 240 g. What is the mean (average) load it held, in grams?
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 250 g and 350 g. What is the mean (average) load it held, in grams?
26. 26.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) sketch three ideas (b) strengthen the weak part
27. 27.🔢 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
28. 28.True or false: to guess, do not measure is poor testing. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) change only one thing (b) record every result (c) repeat each test (d) change lots at once
30. 30.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to test ideas cheaply (d) to decorate a room
31. 31.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
32. 32.🧪 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 strongest? (a) design C (b) design B (c) design A
33. 33.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
34. 34.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) strengthen the weak part (c) load it with coins (d) build it with straws
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.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
37. 37.🧪 Three prototype bridges were tested with the same method. Design A held 340 g, design B held 240 g and design C held 290 g. Which design was the weakest? (a) design B (b) design C (c) design A
38. 38.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 270 g. What is the mean (average) load it held, in grams?
39. 39.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) read the challenge rules (b) sketch three ideas (c) strengthen the weak part (d) choose and draw one
40. 40.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?

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