Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 913 · 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 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
2. 2.🧪 A paper bridge was tested three times. It held 180 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
3. 3.🧪 Is it good or poor testing to guess, do not measure? (a) poor testing (b) good testing
4. 4.🧪 What is a prototype? (a) a sales poster (b) a broken part (c) an early test model (d) the final product
5. 5.🧪 A paper bridge was tested three times. It held 390 g, 330 g and 270 g. What is the mean (average) load it held, in grams?
6. 6.🧪 A paper bridge was tested three times. It held 240 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
7. 7.🧪 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
8. 8.True or false: to test it only once is good testing. (a) False (b) True
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 170 g and 130 g. What is the mean (average) load it held, in grams?
10. 10.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) sketch three ideas (d) strengthen the weak part
11. 11.🧪 A paper bridge was tested three times. It held 320 g, 160 g and 270 g. What is the mean (average) load it held, in grams?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 340 g. Which design was the strongest? (a) design A (b) design C (c) design B
13. 13.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) build it with straws (b) read the challenge rules
14. 14.🧪 In a fair test, how many things do you change at a time? (a) two (b) none (c) all of them (d) one
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 380 g and design C held 330 g. Which design was the weakest? (a) design A (b) design C (c) design B
16. 16.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) use a new load each time
17. 17.🧪 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
18. 18.🧪 Is it good or poor testing to skip writing results? (a) good testing (b) poor testing
19. 19.True or false: to change only one thing is good testing. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) use the same load (d) test it only once
21. 21.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
22. 22.True or false: to repeat each test is good testing. (a) False (b) True
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) build it with straws (b) read the challenge rules (c) choose and draw one (d) strengthen the weak part
24. 24.🧪 A paper bridge was tested three times. It held 260 g, 90 g and 190 g. What is the mean (average) load it held, in grams?
25. 25.🧪 The first prototype held 250 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
26. 26.🧪 The first prototype held 140 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
27. 27.True or false: to change lots at once is good testing. (a) False (b) True
28. 28.🧪 A paper bridge was tested three times. It held 390 g, 320 g and 310 g. What is the mean (average) load it held, in grams?
29. 29.🔢 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
30. 30.True or false: to measure the same way is poor testing. (a) False (b) True
31. 31.🔢 To build and test a straw bridge, which is the LAST step? (a) strengthen the weak part (b) build it with straws (c) load it with coins (d) read the challenge rules
32. 32.🧪 A paper bridge was tested three times. It held 180 g, 70 g and 200 g. What is the mean (average) load it held, in grams?
33. 33.🧪 Three prototype bridges were tested with the same method. Design A held 200 g, design B held 300 g and design C held 250 g. Which design was the strongest? (a) design B (b) design C (c) design A
34. 34.🔍 Which is the odd one out? (a) skip writing results (b) measure the same way (c) repeat each test (d) use the same load
35. 35.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
36. 36.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) skip writing results (d) record every result
37. 37.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
38. 38.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) guess, do not measure (d) use the same load
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) choose and draw one (c) build it with straws (d) sketch three ideas
40. 40.🧪 A paper bridge was tested three times. It held 360 g, 200 g and 280 g. What is the mean (average) load it held, in grams?

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