Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 827 · 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.🧪 Why repeat a test three times? (a) to get reliable results (b) the first is wrong (c) to use more paper (d) it looks busy
2. 2.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) load it with coins (b) read the challenge rules (c) strengthen the weak part (d) choose and draw one
3. 3.True or false: to change only one thing is good testing. (a) False (b) True
4. 4.True or false: to change lots at once is poor testing. (a) False (b) True
5. 5.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
6. 6.True or false: to record every result is good testing. (a) False (b) True
7. 7.True or false: to use the same load is poor testing. (a) True (b) False
8. 8.🔢 To build and test a straw bridge, which is the LAST step? (a) build it with straws (b) load it with coins (c) strengthen the weak part (d) sketch three ideas
9. 9.True or false: to use the same load is good testing. (a) True (b) False
10. 10.True or false: to use a new load each time is poor testing. (a) False (b) True
11. 11.🧪 In a fair test, how many things do you change at a time? (a) two (b) all of them (c) none (d) one
12. 12.True or false: to hide a failed test is good testing. (a) True (b) False
13. 13.True or false: to guess, do not measure is good testing. (a) False (b) True
14. 14.True or false: to record every result is poor testing. (a) False (b) True
15. 15.🔢 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) build it with straws (d) load it with coins
16. 16.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
17. 17.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
18. 18.🧪 A paper bridge was tested three times. It held 150 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
19. 19.🔢 To build and test a straw bridge, which is the FIRST step? (a) sketch three ideas (b) choose and draw one (c) load it with coins (d) read the challenge rules
20. 20.True or false: to test it only once is good testing. (a) True (b) False
21. 21.🧪 What is a prototype? (a) a sales poster (b) an early test model (c) the final product (d) a broken part
22. 22.🔢 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
23. 23.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) sketch three ideas (b) choose and draw one (c) build it with straws (d) strengthen the weak part
24. 24.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 200 g and 250 g. What is the mean (average) load it held, in grams?
26. 26.🔍 Which is the odd one out? (a) skip writing results (b) change lots at once (c) test it only once (d) use the same load
27. 27.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the strongest? (a) design A (b) design C (c) design B
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 210 g and design C held 260 g. Which design was the strongest? (a) design B (b) design A (c) design C
29. 29.🔍 Which is the odd one out? (a) use the same load (b) change only one thing (c) test it only once (d) repeat each test
30. 30.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
31. 31.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 440 g. How many more grams did it hold?
32. 32.🧪 Is it good or poor testing to record every result? (a) poor testing (b) good testing
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.True or false: to use a new load each time is good testing. (a) True (b) False
35. 35.🔢 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
36. 36.🧪 Is it good or poor testing to use a new load each time? (a) poor testing (b) good testing
37. 37.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) skip writing results
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) use a new load each time (c) repeat each test (d) use the same load
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 180 g, design B held 230 g and design C held 130 g. Which design was the weakest? (a) design B (b) design A (c) design C
40. 40.True or false: to repeat each test is poor testing. (a) True (b) False

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids