Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 752 · 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 290 g. How many more grams did it hold?
2. 2.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) load it with coins
3. 3.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
4. 4.True or false: to change only one thing is good testing. (a) False (b) True
5. 5.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
6. 6.🔢 To build and test a straw bridge, which is the FIRST step? (a) build it with straws (b) read the challenge rules (c) sketch three ideas (d) strengthen the weak part
7. 7.🔢 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
8. 8.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
9. 9.🧪 What is a prototype? (a) a broken part (b) an early test model (c) a sales poster (d) the final product
10. 10.🧪 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
11. 11.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) choose and draw one (c) load it with coins (d) sketch three ideas
12. 12.🔍 Which is the odd one out? (a) record every result (b) use a new load each time (c) repeat each test (d) change only one thing
13. 13.True or false: to use a new load each time is poor testing. (a) True (b) False
14. 14.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 260 g. How many more grams did it hold?
15. 15.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
16. 16.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
17. 17.🧪 Why repeat a test three times? (a) to use more paper (b) the first is wrong (c) to get reliable results (d) it looks busy
18. 18.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
19. 19.True or false: to repeat each test is poor testing. (a) True (b) False
20. 20.🧪 The first prototype held 130 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 290 g. How many more grams did it hold?
22. 22.🧪 A paper bridge was tested three times. It held 350 g, 310 g and 300 g. What is the mean (average) load it held, in grams?
23. 23.🧪 A paper bridge was tested three times. It held 370 g, 200 g and 240 g. What is the mean (average) load it held, in grams?
24. 24.True or false: to test it only once is good testing. (a) False (b) True
25. 25.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 420 g. How many more grams did it hold?
26. 26.🧪 A paper bridge was tested three times. It held 160 g, 70 g and 220 g. What is the mean (average) load it held, in grams?
27. 27.🧪 The first prototype held 60 g. After the team improved it, the new prototype held 190 g. How many more grams did it hold?
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) measure the same way (d) skip writing results
29. 29.🧪 A paper bridge was tested three times. It held 270 g, 150 g and 300 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 110 g, design B held 160 g and design C held 210 g. Which design was the strongest? (a) design A (b) design B (c) design C
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 380 g, design B held 330 g and design C held 280 g. Which design was the strongest? (a) design A (b) design C (c) design B
32. 32.True or false: to measure the same way is poor testing. (a) False (b) True
33. 33.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
34. 34.🧪 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 weakest? (a) design C (b) design A (c) design B
35. 35.🔍 Which is the odd one out? (a) use a new load each time (b) change only one thing (c) skip writing results (d) change lots at once
36. 36.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
37. 37.🧪 A paper bridge was tested three times. It held 330 g, 300 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 400 g. How many more grams did it hold?
39. 39.🧪 A paper bridge was tested three times. It held 330 g, 290 g and 250 g. What is the mean (average) load it held, in grams?
40. 40.🧪 Three prototype bridges were tested with the same method. Design A held 260 g, design B held 360 g and design C held 310 g. Which design was the weakest? (a) design B (b) design A (c) design C

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