Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 636 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
2. 2.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) the Sun (c) a tree (d) a wall
3. 3.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
4. 4.True or false: two small mirrors is needed for the periscope. (a) True (b) False
5. 5.True or false: dark soil reflects light well. (a) False (b) True
6. 6.True or false: a mirror reflects light poorly. (a) False (b) True
7. 7.🔭 Which of these reflects light well? (a) a rough wooden board (b) a dull brick (c) aluminium foil (d) black cloth
8. 8.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) a ruler (c) a pencil (d) an empty juice carton
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
10. 10.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) black cloth
11. 11.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
13. 13.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it can float (c) so light reaches the eye (d) so it looks shiny
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) turmeric powder
16. 16.True or false: a battery cell is needed for the periscope. (a) False (b) True
17. 17.True or false: an empty juice carton is not needed for the periscope. (a) False (b) True
18. 18.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same light (c) the same carton (d) the angle of the mirrors
20. 20.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the angle of the mirrors (c) the same light (d) the same carton
22. 22.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) an empty juice carton (c) sticky tape (d) two small mirrors
24. 24.🔭 Which of these reflects light well? (a) a rough wooden board (b) still clear water (c) a dull brick (d) black cloth
25. 25.🧺 Which of these is needed for the periscope? (a) yeast (b) a magnet (c) sticky tape (d) a battery cell
26. 26.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) still clear water (d) a shiny steel plate
27. 27.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 10 degrees (d) 45 degrees
29. 29.True or false: sticky tape is not needed for the periscope. (a) False (b) True
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) a mirror (c) a dull brick (d) dark soil
31. 31.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
32. 32.🔭 How many times does light bounce off a mirror in a simple periscope?
33. 33.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) a mirror
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🔭 How many mirrors does a simple periscope use?
36. 36.🔍 Which is the odd one out? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
37. 37.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) aluminium foil (d) dark soil
40. 40.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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