Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 274 · 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.⚖️ 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
2. 2.True or false: a shiny steel plate reflects light well. (a) False (b) True
3. 3.🔭 Which of these reflects light poorly? (a) aluminium foil (b) still clear water (c) a mirror (d) dark soil
4. 4.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
5. 5.🔍 Which is the odd one out? (a) black cloth (b) dark soil (c) aluminium foil (d) a dull brick
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) the Sun (d) a tree
7. 7.⚖️ 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) how clear the view is (d) the same light
8. 8.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
9. 9.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) dark soil (d) a rough wooden board
10. 10.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
11. 11.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) the ground (d) nothing at all
13. 13.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) a magnet (d) a pencil
14. 14.🧺 Which of these is needed for the periscope? (a) yeast (b) turmeric powder (c) vinegar (d) two small mirrors
15. 15.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
18. 18.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a rough wooden board
20. 20.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
21. 21.True or false: black cloth reflects light poorly. (a) False (b) True
22. 22.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
23. 23.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a shiny steel plate
24. 24.True or false: yeast is needed for the periscope. (a) False (b) True
25. 25.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
26. 26.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) a shiny steel plate
28. 28.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) aluminium foil (d) still clear water
29. 29.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.⚖️ 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
31. 31.True or false: a mirror reflects light poorly. (a) False (b) True
32. 32.🔭 Which of these reflects light well? (a) a rough wooden board (b) aluminium foil (c) black cloth (d) a dull brick
33. 33.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see germs (d) see over a wall
34. 34.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) turmeric powder (c) two small mirrors (d) a ruler
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) big wall mirrors (c) loose glass panes (d) broken glass bits
37. 37.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a magnet (d) a pencil
38. 38.True or false: a battery cell is not needed for the periscope. (a) True (b) False
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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