Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 373 · 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.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) an empty juice carton (c) a battery cell (d) a pencil
2. 2.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) vinegar
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) sticky tape (d) turmeric powder
4. 4.True or false: black cloth reflects light poorly. (a) True (b) False
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a magnet (d) a ruler
6. 6.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a friend’s toy (c) a tree (d) a wall
7. 7.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: a battery cell is not needed for the periscope. (a) True (b) False
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a balloon (c) a ruler (d) two small mirrors
10. 10.🔭 How many times does light bounce off a mirror in a simple periscope?
11. 11.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
12. 12.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) still clear water
13. 13.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a balloon (d) sticky tape
14. 14.True or false: a pencil is not needed for the periscope. (a) False (b) True
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) the ground (b) nothing at all (c) taller walls (d) only short walls
16. 16.🔍 Which is the odd one out? (a) a shiny steel plate (b) a rough wooden board (c) still clear water (d) aluminium foil
17. 17.True or false: a mirror reflects light well. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a mirror (b) a dull brick (c) still clear water (d) a shiny steel plate
19. 19.True or false: a ruler is needed for the periscope. (a) False (b) True
20. 20.True or false: a magnet is needed for the periscope. (a) False (b) True
21. 21.⚖️ 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) True (b) False
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a pencil (d) yeast
23. 23.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same carton (b) the angle of the mirrors (c) how clear the view is (d) the same light
24. 24.🔭 Which of these reflects light well? (a) still clear water (b) dark soil (c) a dull brick (d) black cloth
25. 25.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) a brighter view (d) only darkness
26. 26.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light well (b) reflects light poorly
27. 27.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) plastic safety mirrors (d) loose glass panes
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is the one thing we change. (a) True (b) False
29. 29.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) a dull brick (d) still clear water
30. 30.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) upside down only (c) flipped left to right (d) in colour
31. 31.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) black cloth
32. 32.📘 Light bouncing off a mirror is called ___. (a) refraction (b) reflection (c) magnetism (d) evaporation
33. 33.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) a shiny steel plate (d) a dull brick
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.True or false: a balloon is needed for the periscope. (a) False (b) True
36. 36.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
37. 37.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.⚖️ 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
39. 39.🔭 How many mirrors does a simple periscope use?
40. 40.True or false: still clear water reflects light poorly. (a) True (b) False

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