Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 9 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🔭 How many times does light bounce off a mirror in a simple periscope?
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
3. 3.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a magnet (d) a ruler
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a magnet (d) sticky tape
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
7. 7.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) turmeric powder (d) vinegar
8. 8.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) only short walls (d) the ground
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
12. 12.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) aluminium foil (c) dark soil (d) black cloth
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) a pencil
15. 15.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
16. 16.🧺 Which of these is not needed for the periscope? (a) a pencil (b) yeast (c) a ruler (d) two small mirrors
17. 17.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
19. 19.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
20. 20.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a pencil (d) two small mirrors
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the same carton (c) how clear the view is (d) the same mirrors
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same light
24. 24.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
25. 25.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
26. 26.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) True (b) False
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the object we look at (d) the same light
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 45 degrees (c) 180 degrees (d) 10 degrees
31. 31.True or false: aluminium foil reflects light poorly. (a) False (b) True
32. 32.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) upside down only (d) flipped left to right
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the object we look at”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) vinegar (c) a ruler (d) sticky tape
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) a balloon (d) two small mirrors
38. 38.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
39. 39.True or false: turmeric powder is needed for the periscope. (a) True (b) False
40. 40.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so light reaches the eye (c) to make it heavy (d) so it can float

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