Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 229 · 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 is the odd one out? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) a rough wooden board
2. 2.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) aluminium foil (d) a dull brick
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
4. 4.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Which of these is needed for the periscope? (a) a balloon (b) vinegar (c) two small mirrors (d) a magnet
7. 7.True or false: still clear water reflects light poorly. (a) False (b) True
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
10. 10.⚖️ 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
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) False (b) True
12. 12.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
13. 13.⚖️ 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 light (b) how clear the view is (c) the same carton (d) the angle of the mirrors
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is
15. 15.True or false: sticky tape is not needed for the periscope. (a) False (b) True
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
17. 17.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) dark soil
18. 18.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a pencil (d) a battery cell
19. 19.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
20. 20.🔭 How many mirrors does a simple periscope use?
21. 21.True or false: a shiny steel plate reflects light well. (a) True (b) False
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
23. 23.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
24. 24.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
25. 25.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
26. 26.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a ruler (c) a balloon (d) a magnet
27. 27.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
28. 28.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) black cloth (d) a shiny steel plate
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) turmeric powder (c) sticky tape (d) a pencil
32. 32.⚖️ 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) True (b) False
33. 33.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
34. 34.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) a rough wooden board (b) aluminium foil (c) dark soil (d) a dull brick
36. 36.True or false: two small mirrors is not needed for the periscope. (a) False (b) True
37. 37.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) False (b) True
40. 40.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) dark soil (d) a shiny steel plate

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