Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 688 · 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.🧪 What is a prototype? (a) the final product (b) an early test model (c) a sales poster (d) a broken part
2. 2.🔢 To build and test a straw bridge, which comes first: “choose and draw one” or “sketch three ideas”? (a) choose and draw one (b) sketch three ideas
3. 3.🔢 To build and test a straw bridge, which comes first: “sketch three ideas” or “strengthen the weak part”? (a) strengthen the weak part (b) sketch three ideas
4. 4.🧪 A paper bridge was tested three times. It held 420 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
5. 5.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 280 g. How many more grams did it hold?
6. 6.🧪 A paper bridge was tested three times. It held 200 g, 120 g and 250 g. What is the mean (average) load it held, in grams?
7. 7.True or false: to guess, do not measure is poor testing. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) change only one thing (b) use the same load (c) hide a failed test (d) repeat each test
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 130 g, design B held 230 g and design C held 180 g. Which design was the strongest? (a) design A (b) design B (c) design C
10. 10.🧪 Is it good or poor testing to test it only once? (a) poor testing (b) good testing
11. 11.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) change only one thing (d) skip writing results
12. 12.🔢 To build and test a straw bridge, which is the FIRST step? (a) strengthen the weak part (b) sketch three ideas (c) read the challenge rules (d) build it with straws
13. 13.🧪 Why repeat a test three times? (a) to use more paper (b) to get reliable results (c) the first is wrong (d) it looks busy
14. 14.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 410 g. How many more grams did it hold?
15. 15.🔍 Which is the odd one out? (a) test it only once (b) use the same load (c) measure the same way (d) change only one thing
16. 16.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) one (c) two (d) none
17. 17.🧪 Is it good or poor testing to change lots at once? (a) good testing (b) poor testing
18. 18.🧪 Is it good or poor testing to guess, do not measure? (a) good testing (b) poor testing
19. 19.🧪 The first prototype held 100 g. After the team improved it, the new prototype held 140 g. How many more grams did it hold?
20. 20.🧪 The first prototype held 290 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
21. 21.🧪 The first prototype held 270 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
22. 22.🧪 Is it good or poor testing to measure the same way? (a) poor testing (b) good testing
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.🧪 Three prototype bridges were tested with the same method. Design A held 220 g, design B held 170 g and design C held 120 g. Which design was the weakest? (a) design B (b) design A (c) design C
25. 25.True or false: to use a new load each time is good testing. (a) False (b) True
26. 26.🔢 To build and test a straw bridge, what comes right after “read the challenge rules”? (a) load it with coins (b) choose and draw one (c) sketch three ideas (d) build it with straws
27. 27.🧪 Is it good or poor testing to use the same load? (a) poor testing (b) good testing
28. 28.🔍 Which is the odd one out? (a) change only one thing (b) use a new load each time (c) change lots at once (d) guess, do not measure
29. 29.🧪 The first prototype held 170 g. After the team improved it, the new prototype held 370 g. How many more grams did it hold?
30. 30.🧪 Three prototype bridges were tested with the same method. Design A held 250 g, design B held 300 g and design C held 350 g. Which design was the weakest? (a) design C (b) design B (c) design A
31. 31.🔢 To build and test a straw bridge, what comes right after “sketch three ideas”? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) build it with straws
32. 32.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to test ideas cheaply (c) to decorate a room (d) to sell them at once
33. 33.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 150 g, design B held 200 g and design C held 250 g. Which design was the strongest? (a) design A (b) design C (c) design B
35. 35.🧪 The first prototype held 280 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
36. 36.🧪 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 A (c) design B
37. 37.🧪 A paper bridge was tested three times. It held 420 g, 270 g and 270 g. What is the mean (average) load it held, in grams?
38. 38.True or false: to change only one thing is poor testing. (a) False (b) True
39. 39.True or false: to hide a failed test is poor testing. (a) False (b) True
40. 40.🧪 The first prototype held 160 g. After the team improved it, the new prototype held 230 g. How many more grams did it hold?

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