Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 231 · 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.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
2. 2.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
3. 3.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
4. 4.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
5. 5.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
6. 6.True or false: a rough wooden board reflects light poorly. (a) False (b) True
7. 7.🔭 Who uses a periscope to look above the water? (a) a baker (b) a farmer (c) a submarine crew (d) a pilot in a plane
8. 8.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) an empty juice carton (d) a pencil
10. 10.🔭 How many mirrors does a simple periscope use?
11. 11.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) a battery cell (c) a magnet (d) a ruler
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
14. 14.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) refraction (d) evaporation
15. 15.⚖️ 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
16. 16.⚖️ 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 angle of the mirrors (d) the same mirrors
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) a wall (d) the Sun
18. 18.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) an empty juice carton (c) a balloon (d) a magnet
19. 19.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a mirror (d) a dull brick
20. 20.🧺 Which of these is not needed for the periscope? (a) a magnet (b) a ruler (c) sticky tape (d) an empty juice carton
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
22. 22.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a balloon (c) a ruler (d) an empty juice carton
24. 24.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) still clear water
25. 25.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) dark soil (d) a shiny steel plate
26. 26.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
27. 27.🧺 Which of these is needed for the periscope? (a) vinegar (b) sticky tape (c) yeast (d) a battery cell
28. 28.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the same mirrors
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) turmeric powder (c) a pencil (d) sticky tape
31. 31.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.⚖️ 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
33. 33.🧺 Which of these is needed for the periscope? (a) a magnet (b) yeast (c) two small mirrors (d) a battery cell
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) an empty juice carton (c) a pencil (d) a balloon
36. 36.🔍 Which is the odd one out? (a) black cloth (b) a mirror (c) a rough wooden board (d) dark soil
37. 37.True or false: two small mirrors is needed for the periscope. (a) False (b) True
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.⚖️ 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
40. 40.🛟 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

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