Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 143 · 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) hear far sounds (b) see in the dark (c) see over a wall (d) see germs
2. 2.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) loose glass panes (c) plastic safety mirrors (d) broken glass bits
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) yeast (d) a ruler
4. 4.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) only darkness (c) two pictures (d) a brighter view
5. 5.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
6. 6.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
7. 7.True or false: a battery cell is needed for the periscope. (a) False (b) True
8. 8.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.True or false: a dull brick reflects light well. (a) True (b) False
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) dark soil (d) aluminium foil
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) two small mirrors (c) an empty juice carton (d) a pencil
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.True or false: still clear water reflects light poorly. (a) False (b) True
16. 16.True or false: a pencil is needed for the periscope. (a) True (b) False
17. 17.True or false: a pencil is not needed for the periscope. (a) True (b) False
18. 18.🔭 At what angle are the mirrors set in a simple periscope? (a) 10 degrees (b) 90 degrees (c) 45 degrees (d) 180 degrees
19. 19.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
20. 20.🔭 Which of these reflects light well? (a) dark soil (b) a rough wooden board (c) a dull brick (d) a shiny steel plate
21. 21.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) black cloth (d) dark soil
22. 22.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) black cloth (d) a rough wooden board
23. 23.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a magnet (c) a balloon (d) a battery cell
24. 24.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
25. 25.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🧺 Which of these is needed for the periscope? (a) vinegar (b) an empty juice carton (c) a magnet (d) a battery cell
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) an empty juice carton (d) a magnet
29. 29.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
30. 30.🔭 Who uses a periscope to look above the water? (a) a farmer (b) a pilot in a plane (c) a submarine crew (d) a baker
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.⚖️ 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) the object we look at (c) how clear the view is (d) the same carton
33. 33.True or false: a dull brick reflects light poorly. (a) True (b) False
34. 34.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
35. 35.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) aluminium foil (b) still clear water (c) a rough wooden board (d) a mirror
37. 37.🔭 Which of these reflects light poorly? (a) a dull brick (b) still clear water (c) a shiny steel plate (d) a mirror
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) how clear the view is (c) the same carton (d) the object we look at
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) vinegar (d) an empty juice carton
40. 40.True or false: a shiny steel plate reflects light well. (a) False (b) True

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