Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 223 · 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.🧪 A paper bridge was tested three times. It held 340 g, 260 g and 210 g. What is the mean (average) load it held, in grams?
2. 2.🧪 The first prototype held 200 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
3. 3.🧪 A paper bridge was tested three times. It held 170 g, 100 g and 180 g. What is the mean (average) load it held, in grams?
4. 4.🔍 Which is the odd one out? (a) measure the same way (b) guess, do not measure (c) record every result (d) use the same load
5. 5.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 330 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 160 g, 130 g and 160 g. What is the mean (average) load it held, in grams?
7. 7.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
8. 8.🧪 Three prototype bridges were tested with the same method. Design A held 320 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design C (b) design B (c) design A
9. 9.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
10. 10.True or false: to use the same load is good testing. (a) False (b) True
11. 11.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 200 g and design C held 300 g. Which design was the weakest? (a) design A (b) design C (c) design B
12. 12.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “build it with straws”? (a) read the challenge rules (b) build it with straws
13. 13.True or false: to record every result is poor testing. (a) True (b) False
14. 14.🧪 A paper bridge was tested three times. It held 190 g, 90 g and 260 g. What is the mean (average) load it held, in grams?
15. 15.True or false: to measure the same way is good testing. (a) False (b) True
16. 16.🧪 Why do engineers make prototypes? (a) to sell them at once (b) to avoid testing (c) to decorate a room (d) to test ideas cheaply
17. 17.🧪 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
18. 18.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 250 g. How many more grams did it hold?
19. 19.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 290 g and design C held 190 g. Which design was the strongest? (a) design C (b) design B (c) design A
20. 20.🧪 Is it good or poor testing to record every result? (a) good testing (b) poor testing
21. 21.🧪 What is a prototype? (a) the final product (b) a sales poster (c) an early test model (d) a broken part
22. 22.🔍 Which is the odd one out? (a) repeat each test (b) change only one thing (c) measure the same way (d) skip writing results
23. 23.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) build it with straws (b) read the challenge rules
24. 24.🧪 Is it good or poor testing to hide a failed test? (a) good testing (b) poor testing
25. 25.🔍 Which is the odd one out? (a) record every result (b) repeat each test (c) change only one thing (d) change lots at once
26. 26.🔍 Which is the odd one out? (a) change lots at once (b) guess, do not measure (c) use the same load (d) use a new load each time
27. 27.True or false: to use a new load each time is poor testing. (a) False (b) True
28. 28.True or false: to repeat each test is good testing. (a) True (b) False
29. 29.🧪 The first prototype held 120 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
30. 30.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
31. 31.True or false: to guess, do not measure is good testing. (a) False (b) True
32. 32.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 200 g. How many more grams did it hold?
33. 33.🧪 A paper bridge was tested three times. It held 370 g, 170 g and 270 g. What is the mean (average) load it held, in grams?
34. 34.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) two (c) one (d) none
35. 35.🧪 A paper bridge was tested three times. It held 350 g, 200 g and 290 g. What is the mean (average) load it held, in grams?
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 230 g, design B held 130 g and design C held 180 g. Which design was the weakest? (a) design C (b) design A (c) design B
37. 37.True or false: to change lots at once is good testing. (a) True (b) False
38. 38.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “load it with coins”? (a) read the challenge rules (b) load it with coins
39. 39.True or false: to test it only once is good testing. (a) False (b) True
40. 40.🧪 A paper bridge was tested three times. It held 360 g, 240 g and 270 g. What is the mean (average) load it held, in grams?

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