Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 100 · 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.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔭 Which of these reflects light well? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
3. 3.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a battery cell
4. 4.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
5. 5.🔭 How many mirrors does a simple periscope use?
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a ruler (d) a pencil
7. 7.True or false: dark soil reflects light well. (a) False (b) True
8. 8.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same mirrors (b) the object we look at (c) the same carton (d) the angle of the mirrors
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) an empty juice carton (d) a magnet
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.🛟 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
16. 16.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) only darkness (c) two pictures (d) a rainbow
18. 18.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) vinegar (d) a ruler
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) two small mirrors (d) sticky tape
21. 21.🧺 Which of these is needed for the periscope? (a) yeast (b) an empty juice carton (c) vinegar (d) a magnet
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
23. 23.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
24. 24.True or false: a pencil is not needed for the periscope. (a) True (b) False
25. 25.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
26. 26.True or false: a balloon is needed for the periscope. (a) True (b) False
27. 27.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
29. 29.True or false: two small mirrors is needed for the periscope. (a) True (b) False
30. 30.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
31. 31.True or false: a mirror reflects light well. (a) False (b) True
32. 32.🧺 Which of these is needed for the periscope? (a) a magnet (b) a balloon (c) a pencil (d) vinegar
33. 33.🔭 Which of these reflects light poorly? (a) dark soil (b) still clear water (c) a mirror (d) a shiny steel plate
34. 34.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
37. 37.True or false: aluminium foil reflects light well. (a) True (b) False
38. 38.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a submarine crew (c) a pilot in a plane (d) a baker
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) the angle of the mirrors (c) how clear the view is
40. 40.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a pencil (d) yeast

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