Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 662 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
2. 2.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) black cloth (d) a mirror
3. 3.⚖️ 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 same light (c) the angle of the mirrors
4. 4.True or false: still clear water reflects light poorly. (a) False (b) True
5. 5.🧺 Do we need a magnet 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 what we measure? (a) the angle of the mirrors (b) the same light (c) how clear the view is (d) the same carton
7. 7.⚖️ 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 same carton (c) the angle of the mirrors (d) the same light
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
9. 9.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a ruler (d) a magnet
11. 11.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) dark soil (d) a shiny steel plate
12. 12.⚖️ 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
13. 13.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a dull brick (d) aluminium foil
14. 14.True or false: vinegar is not needed for the periscope. (a) False (b) True
15. 15.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a battery cell (c) a ruler (d) an empty juice carton
16. 16.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
17. 17.True or false: a battery cell is needed for the periscope. (a) False (b) True
18. 18.⚖️ 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) True (b) False
19. 19.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
21. 21.⚖️ 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
22. 22.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) reflection (d) refraction
23. 23.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
24. 24.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
25. 25.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a ruler (d) turmeric powder
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.🔭 How many times does light bounce off a mirror in a simple periscope?
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) a pencil (d) vinegar
32. 32.🧺 Which of these is not needed for the periscope? (a) turmeric powder (b) two small mirrors (c) a pencil (d) sticky tape
33. 33.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
34. 34.True or false: a battery cell is not needed for the periscope. (a) False (b) True
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) a magnet (d) a pencil
36. 36.🔍 Which is the odd one out? (a) black cloth (b) aluminium foil (c) a dull brick (d) a rough wooden board
37. 37.True or false: a mirror reflects light poorly. (a) False (b) True
38. 38.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a balloon
39. 39.True or false: a magnet is not needed for the periscope. (a) True (b) False
40. 40.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up

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