Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 31 · 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.True or false: to skip writing results is good testing. (a) True (b) False
2. 2.True or false: to repeat each test is poor testing. (a) False (b) True
3. 3.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
4. 4.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) repeat each test (d) guess, do not measure
5. 5.🧪 A paper bridge was tested three times. It held 300 g, 160 g and 230 g. What is the mean (average) load it held, in grams?
6. 6.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
7. 7.🧪 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
8. 8.🧪 A paper bridge was tested three times. It held 350 g, 260 g and 440 g. What is the mean (average) load it held, in grams?
9. 9.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
10. 10.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 350 g and design C held 300 g. Which design was the weakest? (a) design C (b) design A (c) design B
11. 11.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
12. 12.🧪 Three prototype bridges were tested with the same method. Design A held 280 g, design B held 330 g and design C held 380 g. Which design was the weakest? (a) design A (b) design B (c) design C
13. 13.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) sketch three ideas (b) read the challenge rules
14. 14.🧪 A paper bridge was tested three times. It held 300 g, 220 g and 260 g. What is the mean (average) load it held, in grams?
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
16. 16.True or false: to record every result is good testing. (a) True (b) False
17. 17.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) build it with straws (b) strengthen the weak part (c) choose and draw one (d) load it with coins
18. 18.🧪 A paper bridge was tested three times. It held 310 g, 130 g and 250 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “load it with coins”? (a) choose and draw one (b) load it with coins
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
21. 21.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 370 g and design C held 320 g. Which design was the weakest? (a) design A (b) design B (c) design C
22. 22.🔍 Which is the odd one out? (a) use a new load each time (b) guess, do not measure (c) change lots at once (d) record every result
23. 23.🔍 Which is the odd one out? (a) repeat each test (b) skip writing results (c) measure the same way (d) change only one thing
24. 24.True or false: to measure the same way is poor testing. (a) False (b) True
25. 25.🔢 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
26. 26.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) sketch three ideas (c) build it with straws (d) strengthen the weak part
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 280 g. Which design was the strongest? (a) design B (b) design A (c) design C
28. 28.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) strengthen the weak part (c) sketch three ideas (d) build it with straws
29. 29.True or false: to change only one thing is good testing. (a) True (b) False
30. 30.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 210 g. How many more grams did it hold?
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 170 g and design C held 220 g. Which design was the strongest? (a) design A (b) design B (c) design C
32. 32.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
33. 33.🔢 To build and test a straw bridge, what comes right after “choose and draw one”? (a) strengthen the weak part (b) load it with coins (c) build it with straws (d) sketch three ideas
34. 34.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) change only one thing (d) use the same load
35. 35.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
36. 36.🧪 A paper bridge was tested three times. It held 240 g, 140 g and 280 g. What is the mean (average) load it held, in grams?
37. 37.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) test it only once (d) change only one thing
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 280 g and design C held 330 g. Which design was the weakest? (a) design C (b) design B (c) design A
39. 39.True or false: to change lots at once is poor testing. (a) False (b) True
40. 40.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing

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