Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 469 · 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.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
2. 2.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) change only one thing (d) hide a failed test
3. 3.True or false: to measure the same way is good testing. (a) True (b) False
4. 4.🧪 A paper bridge was tested three times. It held 400 g, 290 g and 270 g. What is the mean (average) load it held, in grams?
5. 5.🧪 Is it good or poor testing to change only one thing? (a) poor testing (b) good testing
6. 6.🧪 A paper bridge was tested three times. It held 180 g, 170 g and 190 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
8. 8.True or false: to change only one thing is poor testing. (a) True (b) False
9. 9.🧪 A paper bridge was tested three times. It held 300 g, 290 g and 310 g. What is the mean (average) load it held, in grams?
10. 10.🔍 Which is the odd one out? (a) skip writing results (b) guess, do not measure (c) measure the same way (d) change lots at once
11. 11.🔍 Which is the odd one out? (a) change only one thing (b) repeat each test (c) use the same load (d) change lots at once
12. 12.True or false: to record every result is good testing. (a) False (b) True
13. 13.🧪 The first prototype held 220 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
14. 14.🧪 What is a prototype? (a) the final product (b) a sales poster (c) a broken part (d) an early test model
15. 15.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 320 g. How many more grams did it hold?
16. 16.🧪 A paper bridge was tested three times. It held 270 g, 130 g and 170 g. What is the mean (average) load it held, in grams?
17. 17.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) build it with straws (b) load it with coins (c) choose and draw one (d) sketch three ideas
18. 18.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 180 g. How many more grams did it hold?
19. 19.🔍 Which is the odd one out? (a) skip writing results (b) use the same load (c) repeat each test (d) measure the same way
20. 20.True or false: to use a new load each time is good testing. (a) True (b) False
21. 21.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
22. 22.True or false: to measure the same way is poor testing. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) hide a failed test (b) repeat each test (c) use the same load (d) change only one thing
24. 24.🧪 Three prototype bridges were tested with the same method. Design A held 310 g, design B held 260 g and design C held 210 g. Which design was the strongest? (a) design C (b) design B (c) design A
25. 25.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 270 g. What is the mean (average) load it held, in grams?
26. 26.🧪 A paper bridge was tested three times. It held 300 g, 270 g and 330 g. What is the mean (average) load it held, in grams?
27. 27.🧪 A paper bridge was tested three times. It held 250 g, 200 g and 180 g. What is the mean (average) load it held, in grams?
28. 28.🧪 Why repeat a test three times? (a) the first is wrong (b) to get reliable results (c) to use more paper (d) it looks busy
29. 29.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
30. 30.True or false: to change only one thing is good testing. (a) False (b) True
31. 31.🧪 Three prototype bridges were tested with the same method. Design A held 110 g, design B held 210 g and design C held 160 g. Which design was the strongest? (a) design C (b) design B (c) design A
32. 32.True or false: to hide a failed test is poor testing. (a) True (b) False
33. 33.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) load it with coins (b) strengthen the weak part (c) choose and draw one (d) read the challenge rules
34. 34.🧪 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 B (b) design C (c) design A
35. 35.🧪 The first prototype held 70 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?
36. 36.🧪 The first prototype held 50 g. After the team improved it, the new prototype held 110 g. How many more grams did it hold?
37. 37.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “strengthen the weak part”? (a) strengthen the weak part (b) read the challenge rules
38. 38.True or false: to repeat each test is poor testing. (a) True (b) False
39. 39.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) load it with coins (c) strengthen the weak part (d) build it with straws
40. 40.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) strengthen the weak part (b) load it with coins (c) choose and draw one (d) read the challenge rules

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