Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 932 · 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 do engineers make prototypes? (a) to test ideas cheaply (b) to sell them at once (c) to avoid testing (d) to decorate a room
2. 2.🧪 In a fair test, how many things do you change at a time? (a) none (b) one (c) all of them (d) two
3. 3.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
4. 4.🔍 Which is the odd one out? (a) repeat each test (b) record every result (c) measure the same way (d) hide a failed test
5. 5.True or false: to measure the same way is good testing. (a) True (b) False
6. 6.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
7. 7.🧪 A paper bridge was tested three times. It held 380 g, 210 g and 310 g. What is the mean (average) load it held, in grams?
8. 8.True or false: to use a new load each time is good testing. (a) False (b) True
9. 9.🔢 To build and test a straw bridge, what comes right after “load it with coins”? (a) choose and draw one (b) read the challenge rules (c) build it with straws (d) strengthen the weak part
10. 10.🧪 A paper bridge was tested three times. It held 220 g, 210 g and 230 g. What is the mean (average) load it held, in grams?
11. 11.True or false: to use the same load is good testing. (a) False (b) True
12. 12.True or false: to repeat each test is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
14. 14.🧪 Is it good or poor testing to hide a failed test? (a) poor testing (b) good testing
15. 15.🧪 A paper bridge was tested three times. It held 420 g, 280 g and 260 g. What is the mean (average) load it held, in grams?
16. 16.🧪 A paper bridge was tested three times. It held 390 g, 200 g and 280 g. What is the mean (average) load it held, in grams?
17. 17.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 100 g. Which design was the strongest? (a) design A (b) design B (c) design C
18. 18.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 340 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) change lots at once (b) repeat each test (c) guess, do not measure (d) skip writing results
20. 20.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
21. 21.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
22. 22.True or false: to record every result is good testing. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) use a new load each time (b) change lots at once (c) guess, do not measure (d) change only one thing
24. 24.True or false: to use the same load is poor testing. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) guess, do not measure (d) repeat each test
26. 26.True or false: to change only one thing is poor testing. (a) False (b) True
27. 27.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) sketch three ideas
28. 28.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “choose and draw one”? (a) load it with coins (b) choose and draw one
29. 29.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
30. 30.🔢 To build and test a straw bridge, which comes first: “load it with coins” or “strengthen the weak part”? (a) load it with coins (b) strengthen the weak part
31. 31.🧪 A paper bridge was tested three times. It held 320 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
32. 32.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
33. 33.🧪 Is it good or poor testing to change lots at once? (a) poor testing (b) good testing
34. 34.🔢 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
35. 35.True or false: to repeat each test is poor testing. (a) True (b) False
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 190 g and design C held 240 g. Which design was the weakest? (a) design B (b) design C (c) design A
37. 37.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 430 g. How many more grams did it hold?
38. 38.🧪 The first prototype held 210 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
39. 39.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 210 g and design C held 260 g. Which design was the weakest? (a) design A (b) design B (c) design C
40. 40.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing

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