Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 842 · 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.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) hear far sounds (d) see in the dark
2. 2.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) two small mirrors
3. 3.True or false: aluminium foil reflects light well. (a) False (b) True
4. 4.True or false: a balloon is needed for the periscope. (a) False (b) True
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) to make it heavy (c) so light reaches the eye (d) so it looks shiny
7. 7.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) only short walls (c) nothing at all (d) taller walls
8. 8.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) reflection (c) evaporation (d) refraction
12. 12.True or false: a balloon is not needed for the periscope. (a) True (b) False
13. 13.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
14. 14.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) a mirror
16. 16.True or false: yeast is needed for the periscope. (a) True (b) False
17. 17.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a dull brick (d) a shiny steel plate
18. 18.⚖️ 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
19. 19.🔭 Which of these reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) dark soil (d) black cloth
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a ruler (d) turmeric powder
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: the angle of the mirrors is the one thing we change. (a) True (b) False
23. 23.⚖️ 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
24. 24.⚖️ 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 carton (d) the same mirrors
25. 25.⚖️ 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 carton (d) the same mirrors
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a balloon (c) sticky tape (d) an empty juice carton
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) a battery cell
28. 28.🧺 Which of these is needed for the periscope? (a) sticky tape (b) turmeric powder (c) yeast (d) a magnet
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) a pencil (d) an empty juice carton
31. 31.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
32. 32.🔭 How many mirrors does a simple periscope use?
33. 33.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 180 degrees (d) 45 degrees
34. 34.True or false: dark soil reflects light poorly. (a) False (b) True
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) dark soil (c) a rough wooden board (d) aluminium foil
36. 36.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
37. 37.True or false: a magnet is not needed for the periscope. (a) True (b) False
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) yeast (c) sticky tape (d) a ruler
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a balloon (d) a magnet

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