Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 859 · 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) big wall mirrors (b) broken glass bits (c) plastic safety mirrors (d) loose glass panes
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a magnet
3. 3.True or false: black cloth reflects light poorly. (a) True (b) False
4. 4.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a ruler (d) sticky tape
7. 7.True or false: dark soil reflects light poorly. (a) False (b) True
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.🔮 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
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
13. 13.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a battery cell (d) a balloon
14. 14.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) turmeric powder
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) sticky tape
17. 17.True or false: a dull brick reflects light well. (a) False (b) True
18. 18.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the angle of the mirrors (c) the same mirrors (d) the same carton
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
20. 20.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) a rainbow (d) only darkness
21. 21.🧺 Which of these is needed for the periscope? (a) a pencil (b) a balloon (c) a magnet (d) yeast
22. 22.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a dull brick (d) black cloth
24. 24.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) so light reaches the eye (d) to make it heavy
26. 26.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a pencil (c) two small mirrors (d) turmeric powder
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
28. 28.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
29. 29.🔭 Which of these reflects light well? (a) a mirror (b) black cloth (c) a dull brick (d) dark soil
30. 30.⚖️ 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
31. 31.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) two small mirrors (d) a pencil
33. 33.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) an empty juice carton (d) a balloon
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.True or false: vinegar is not needed for the periscope. (a) False (b) True
36. 36.True or false: sticky tape is not needed for the periscope. (a) False (b) True
37. 37.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a rough wooden board
38. 38.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) a battery cell (d) sticky tape
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
40. 40.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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