Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 125 · 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 dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
2. 2.True or false: a shiny steel plate reflects light well. (a) False (b) True
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
4. 4.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
5. 5.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
6. 6.⚖️ 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 same carton (c) the object we look at (d) the angle of the mirrors
7. 7.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
8. 8.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
9. 9.🔍 Which is the odd one out? (a) dark soil (b) a rough wooden board (c) still clear water (d) black cloth
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the same carton (c) how clear the view is (d) the object we look at
12. 12.True or false: a battery cell is needed for the periscope. (a) False (b) True
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
14. 14.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
15. 15.🔭 How many times does light bounce off a mirror in a simple periscope?
16. 16.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) yeast (c) a balloon (d) a magnet
17. 17.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
18. 18.True or false: dark soil reflects light poorly. (a) True (b) False
19. 19.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) reflection (d) magnetism
20. 20.True or false: yeast is not needed for the periscope. (a) False (b) True
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) sticky tape (d) a pencil
22. 22.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a dull brick
23. 23.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
24. 24.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
25. 25.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
26. 26.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
27. 27.True or false: a shiny steel plate reflects light poorly. (a) True (b) False
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 90 degrees (c) 180 degrees (d) 10 degrees
29. 29.🧺 Which of these is needed for the periscope? (a) yeast (b) a ruler (c) a battery cell (d) a balloon
30. 30.True or false: black cloth reflects light well. (a) False (b) True
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a pencil (d) a balloon
34. 34.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) a magnet
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is kept the same. (a) True (b) False
36. 36.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) still clear water (d) a dull brick
37. 37.True or false: dark soil reflects light well. (a) False (b) True
38. 38.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
40. 40.True or false: a magnet is needed for the periscope. (a) False (b) True

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