Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 152 · 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 shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a magnet
3. 3.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
4. 4.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) a mirror (c) still clear water (d) aluminium foil
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.True or false: dark soil reflects light well. (a) False (b) True
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) a brighter view (c) only darkness (d) two pictures
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a magnet (d) a battery cell
11. 11.🔍 Which is the odd one out? (a) a shiny steel plate (b) black cloth (c) still clear water (d) a mirror
12. 12.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
13. 13.🧺 Which of these is needed for the periscope? (a) a balloon (b) sticky tape (c) vinegar (d) turmeric powder
14. 14.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a friend’s toy (c) a tree (d) the Sun
15. 15.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
16. 16.⚖️ 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) how clear the view is (c) the same carton (d) the same mirrors
17. 17.🔭 How many mirrors does a simple periscope use?
18. 18.🔍 Which is the odd one out? (a) still clear water (b) a rough wooden board (c) a dull brick (d) dark soil
19. 19.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) flipped left to right (c) upside down only (d) much bigger
20. 20.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) a mirror (d) a shiny steel plate
21. 21.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
22. 22.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) evaporation (d) magnetism
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) a pencil (d) sticky tape
25. 25.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
26. 26.True or false: a balloon is not needed for the periscope. (a) False (b) True
27. 27.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) dark soil (d) still clear water
28. 28.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
29. 29.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) a dull brick (d) black cloth
30. 30.⚖️ 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 carton (b) the same mirrors (c) the object we look at (d) the angle of the mirrors
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
32. 32.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
33. 33.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) a battery cell (d) turmeric powder
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) vinegar (d) an empty juice carton
36. 36.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a ruler (c) a battery cell (d) a magnet
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 180 degrees (c) 10 degrees (d) 90 degrees
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a battery cell (d) sticky tape
39. 39.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) sticky tape (d) two small mirrors

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