Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 450 · 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 reflects light well? (a) dark soil (b) a rough wooden board (c) black cloth (d) still clear water
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) plastic safety mirrors (d) broken glass bits
3. 3.True or false: still clear water reflects light poorly. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) a dull brick
5. 5.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a rough wooden board (d) a shiny steel plate
6. 6.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) a pencil (d) a magnet
7. 7.⚖️ 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
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.⚖️ 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) True (b) False
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors
12. 12.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) how clear the view is (c) the angle of the mirrors (d) the same light
15. 15.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
16. 16.🧺 Which of these is needed for the periscope? (a) vinegar (b) turmeric powder (c) a magnet (d) a ruler
17. 17.🔭 How many times does light bounce off a mirror in a simple periscope?
18. 18.⚖️ 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
19. 19.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
20. 20.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
21. 21.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) a shiny steel plate
22. 22.🔭 Which of these reflects light poorly? (a) a rough wooden board (b) aluminium foil (c) a mirror (d) still clear water
23. 23.⚖️ 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 same carton (c) the angle of the mirrors (d) how clear the view is
24. 24.True or false: aluminium foil reflects light well. (a) True (b) False
25. 25.True or false: turmeric powder is needed for the periscope. (a) True (b) False
26. 26.True or false: a balloon is not needed for the periscope. (a) True (b) False
27. 27.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
28. 28.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
29. 29.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) a dull brick
30. 30.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
31. 31.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) only short walls (c) taller walls (d) the ground
32. 32.🔍 Which is the odd one out? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a magnet (d) an empty juice carton
36. 36.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) vinegar (d) an empty juice carton
37. 37.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) a pencil (d) vinegar
39. 39.⚖️ 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
40. 40.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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