Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 765 · 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 160 g. After the team improved it, the new prototype held 170 g. How many more grams did it hold?
2. 2.True or false: to use the same load is good testing. (a) True (b) False
3. 3.True or false: to use a new load each time is poor testing. (a) False (b) True
4. 4.True or false: to change only one thing is poor testing. (a) True (b) False
5. 5.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) strengthen the weak part (b) sketch three ideas (c) load it with coins (d) choose and draw one
6. 6.🔍 Which is the odd one out? (a) use the same load (b) hide a failed test (c) use a new load each time (d) test it only once
7. 7.🧪 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 C (b) design B (c) design A
8. 8.🧪 A paper bridge was tested three times. It held 250 g, 120 g and 140 g. What is the mean (average) load it held, in grams?
9. 9.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “sketch three ideas”? (a) strengthen the weak part (b) sketch three ideas
10. 10.🔍 Which is the odd one out? (a) change only one thing (b) measure the same way (c) skip writing results (d) record every result
11. 11.True or false: to hide a failed test is poor testing. (a) False (b) True
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 390 g. Which design was the strongest? (a) design A (b) design C (c) design B
13. 13.🧪 A paper bridge was tested three times. It held 250 g, 160 g and 340 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “build it with straws”? (a) sketch three ideas (b) build it with straws
15. 15.🧪 What is a prototype? (a) the final product (b) an early test model (c) a broken part (d) a sales poster
16. 16.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
17. 17.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
18. 18.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
19. 19.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) strengthen the weak part
20. 20.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
21. 21.🧪 A paper bridge was tested three times. It held 380 g, 290 g and 260 g. What is the mean (average) load it held, in grams?
22. 22.🧪 A paper bridge was tested three times. It held 230 g, 100 g and 150 g. What is the mean (average) load it held, in grams?
23. 23.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 120 g. How many more grams did it hold?
24. 24.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “choose and draw one”? (a) choose and draw one (b) read the challenge rules
25. 25.🧪 A paper bridge was tested three times. It held 320 g, 210 g and 130 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 “load it with coins”? (a) load it with coins (b) strengthen the weak part
27. 27.True or false: to record every result is poor testing. (a) False (b) True
28. 28.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
29. 29.True or false: to hide a failed test is good testing. (a) False (b) True
30. 30.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) one (d) none
31. 31.True or false: to test it only once is poor testing. (a) False (b) True
32. 32.🧪 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
33. 33.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “read the challenge rules”? (a) strengthen the weak part (b) read the challenge rules
34. 34.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “sketch three ideas”? (a) sketch three ideas (b) load it with coins
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) use the same load (c) change only one thing (d) measure the same way
36. 36.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “read the challenge rules”? (a) choose and draw one (b) read the challenge rules
37. 37.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) load it with coins (c) sketch three ideas (d) read the challenge rules
38. 38.🧪 A paper bridge was tested three times. It held 290 g, 180 g and 160 g. What is the mean (average) load it held, in grams?
39. 39.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
40. 40.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing

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