Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 865 · 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.🔭 How many mirrors does a simple periscope use?
2. 2.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
3. 3.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) in colour (c) flipped left to right (d) upside down only
4. 4.🔭 Which of these reflects light poorly? (a) a mirror (b) a rough wooden board (c) a shiny steel plate (d) still clear water
5. 5.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) refraction (d) reflection
6. 6.True or false: a pencil is not needed for the periscope. (a) True (b) False
7. 7.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
8. 8.🔍 Which is the odd one out? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) dark soil
9. 9.🧺 Which of these is needed for the periscope? (a) yeast (b) a balloon (c) two small mirrors (d) turmeric powder
10. 10.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the same carton (d) the angle of the mirrors
12. 12.True or false: a magnet is needed for the periscope. (a) False (b) True
13. 13.True or false: a pencil is needed for the periscope. (a) True (b) False
14. 14.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
15. 15.⚖️ 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) the same light
16. 16.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
17. 17.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
18. 18.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) aluminium foil (d) black cloth
19. 19.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) yeast
20. 20.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) dark soil (d) black cloth
21. 21.True or false: still clear water reflects light poorly. (a) True (b) False
22. 22.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a rough wooden board (b) a shiny steel plate (c) still clear water (d) a mirror
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) turmeric powder
25. 25.True or false: a balloon is not needed for the periscope. (a) True (b) False
26. 26.🔭 Which of these reflects light poorly? (a) a mirror (b) aluminium foil (c) a shiny steel plate (d) a dull brick
27. 27.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) still clear water (d) dark soil
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) vinegar (c) an empty juice carton (d) a ruler
29. 29.🔭 How many times does light bounce off a mirror in a simple periscope?
30. 30.🧺 Which of these is needed for the periscope? (a) yeast (b) a battery cell (c) an empty juice carton (d) turmeric powder
31. 31.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
32. 32.True or false: vinegar is needed for the periscope. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) two small mirrors (d) a balloon
34. 34.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) loose glass panes (d) broken glass bits
37. 37.⚖️ 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) 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 mirrors”? (a) we change it (b) we keep it the same (c) we measure it
39. 39.⚖️ 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 light (c) how clear the view is
40. 40.⚖️ 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

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