Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 851 · 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) much bigger (b) flipped left to right (c) upside down only (d) in colour
2. 2.🔭 Which of these reflects light well? (a) aluminium foil (b) dark soil (c) a rough wooden board (d) black cloth
3. 3.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) an empty juice carton (d) a battery cell
6. 6.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) still clear water (d) a shiny steel plate
7. 7.⚖️ 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
8. 8.True or false: a balloon is needed for the periscope. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) still clear water (d) a mirror
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) two small mirrors (d) a magnet
12. 12.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
13. 13.⚖️ 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) how clear the view is (c) the angle of the mirrors
14. 14.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) two small mirrors (c) a pencil (d) sticky tape
16. 16.True or false: a magnet is needed for the periscope. (a) True (b) False
17. 17.True or false: yeast is not needed for the periscope. (a) False (b) True
18. 18.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) a battery cell
19. 19.True or false: vinegar is needed for the periscope. (a) True (b) False
20. 20.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) a dull brick
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
22. 22.True or false: a rough wooden board reflects light poorly. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) black cloth (d) a mirror
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a dull brick (d) a shiny steel plate
26. 26.True or false: black cloth reflects light poorly. (a) True (b) False
27. 27.True or false: a ruler is needed for the periscope. (a) False (b) True
28. 28.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
29. 29.⚖️ 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) how clear the view is (d) the same light
30. 30.🔭 How many mirrors does a simple periscope use?
31. 31.🔭 Which of these reflects light well? (a) a mirror (b) dark soil (c) a rough wooden board (d) a dull brick
32. 32.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so it looks shiny (c) so it can float (d) so light reaches the eye
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
34. 34.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
35. 35.🧺 Which of these is needed for the periscope? (a) yeast (b) sticky tape (c) a battery cell (d) a magnet
36. 36.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) black cloth
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) how clear the view is (c) the same mirrors (d) the same carton
38. 38.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.True or false: a pencil is not needed for the periscope. (a) False (b) True

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