Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 434 · 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 260 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
3. 3.🧪 What is a prototype? (a) a broken part (b) the final product (c) a sales poster (d) an early test model
4. 4.🧪 Why repeat a test three times? (a) it looks busy (b) to get reliable results (c) to use more paper (d) the first is wrong
5. 5.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
6. 6.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
7. 7.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “read the challenge rules”? (a) read the challenge rules (b) sketch three ideas
8. 8.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
9. 9.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) none (d) two
10. 10.🧪 A paper bridge was tested three times. It held 200 g, 60 g and 220 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to use the same load is poor testing. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) skip writing results (b) use a new load each time (c) guess, do not measure (d) record every result
13. 13.True or false: to measure the same way is good testing. (a) False (b) True
14. 14.🧪 The first prototype held 110 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
16. 16.🧪 The first prototype held 260 g. After the team improved it, the new prototype held 300 g. How many more grams did it hold?
17. 17.True or false: to test it only once is poor testing. (a) False (b) True
18. 18.True or false: to change only one thing is good testing. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) measure the same way (b) change only one thing (c) repeat each test (d) use a new load each time
20. 20.True or false: to test it only once is good testing. (a) True (b) False
21. 21.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) load it with coins (c) strengthen the weak part (d) choose and draw one
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
23. 23.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 370 g, design B held 270 g and design C held 320 g. Which design was the weakest? (a) design B (b) design A (c) design C
25. 25.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “load it with coins”? (a) sketch three ideas (b) load it with coins
26. 26.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
27. 27.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 80 g. How many more grams did it hold?
28. 28.True or false: to repeat each test is poor testing. (a) True (b) False
29. 29.🧪 A paper bridge was tested three times. It held 380 g, 260 g and 200 g. What is the mean (average) load it held, in grams?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 180 g and design C held 230 g. Which design was the weakest? (a) design B (b) design C (c) design A
31. 31.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
32. 32.🧪 Why do engineers make prototypes? (a) to test ideas cheaply (b) to avoid testing (c) to decorate a room (d) to sell them at once
33. 33.🧪 A paper bridge was tested three times. It held 390 g, 280 g and 350 g. What is the mean (average) load it held, in grams?
34. 34.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 70 g. How many more grams did it hold?
35. 35.True or false: to record every result is good testing. (a) False (b) True
36. 36.True or false: to hide a failed test is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 380 g, 320 g and 350 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change only one thing is poor testing. (a) True (b) False
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 300 g, design B held 250 g and design C held 200 g. Which design was the strongest? (a) design A (b) design C (c) design B
40. 40.🧪 A paper bridge was tested three times. It held 360 g, 280 g and 230 g. What is the mean (average) load it held, in grams?

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