Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 286 · 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) aluminium foil (b) a dull brick (c) black cloth (d) dark soil
2. 2.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) dark soil
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) a magnet (d) two small mirrors
4. 4.🔍 Which is the odd one out? (a) aluminium foil (b) a dull brick (c) a shiny steel plate (d) still clear water
5. 5.🔭 Does black cloth reflect light well or poorly? (a) reflects light well (b) reflects light poorly
6. 6.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) an empty juice carton (d) turmeric powder
7. 7.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🔭 What does a periscope let you do? (a) see germs (b) see in the dark (c) hear far sounds (d) see over a wall
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) the Sun (d) a wall
11. 11.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a pencil (c) a battery cell (d) two small mirrors
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
14. 14.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) dark soil (d) black cloth
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) still clear water (c) black cloth (d) a mirror
17. 17.True or false: a magnet is needed for the periscope. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🧺 Which of these is needed for the periscope? (a) a magnet (b) two small mirrors (c) a balloon (d) a battery cell
21. 21.⚖️ 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
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a mirror
23. 23.True or false: a balloon is not needed for the periscope. (a) True (b) False
24. 24.True or false: two small mirrors is needed for the periscope. (a) False (b) True
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) a battery cell
26. 26.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) much bigger (d) in colour
27. 27.⚖️ 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) how clear the view is (c) the same light (d) the same carton
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) to make it heavy (b) so light reaches the eye (c) so it looks shiny (d) so it can float
29. 29.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) a magnet (d) sticky tape
30. 30.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) yeast (d) a pencil
31. 31.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
32. 32.⚖️ 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) False (b) True
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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) True (b) False
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.True or false: vinegar is needed for the periscope. (a) False (b) True
38. 38.True or false: vinegar is not needed for the periscope. (a) False (b) True
39. 39.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
40. 40.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed

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