Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 512 · 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 of these is needed for the periscope? (a) a ruler (b) a balloon (c) yeast (d) a magnet
2. 2.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
3. 3.True or false: sticky tape is needed for the periscope. (a) False (b) True
4. 4.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) sticky tape (d) a balloon
5. 5.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) a rough wooden board
6. 6.🔭 How many mirrors does a simple periscope use?
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
8. 8.🛟 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
9. 9.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
10. 10.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) magnetism (d) evaporation
11. 11.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a dull brick (c) black cloth (d) a rough wooden board
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) a battery cell (d) sticky tape
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🔭 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
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the periscope? (a) a magnet (b) a pencil (c) a battery cell (d) turmeric powder
17. 17.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) much bigger (c) upside down only (d) in colour
18. 18.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a friend’s toy (d) a wall
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a ruler (d) sticky tape
20. 20.⚖️ 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
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.⚖️ 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 carton (c) the same mirrors (d) how clear the view is
23. 23.⚖️ 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) the angle of the mirrors (c) how clear the view is
24. 24.⚖️ 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) how clear the view is (c) the angle of the mirrors (d) the same carton
25. 25.True or false: a ruler is not needed for the periscope. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
27. 27.True or false: still clear water reflects light well. (a) True (b) False
28. 28.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a balloon (d) a magnet
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a ruler (d) yeast
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) False (b) True
34. 34.True or false: a battery cell is not needed for the periscope. (a) False (b) True
35. 35.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
36. 36.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) black cloth (d) a mirror
38. 38.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
39. 39.True or false: black cloth reflects light well. (a) False (b) True
40. 40.True or false: a pencil is needed for the periscope. (a) True (b) False

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