Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 291 · 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.⚖️ 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 change it (c) we keep it the same
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) sticky tape (d) an empty juice carton
4. 4.True or false: still clear water reflects light poorly. (a) True (b) False
5. 5.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) plastic safety mirrors (c) big wall mirrors (d) loose glass panes
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) vinegar (d) sticky tape
7. 7.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) evaporation (d) reflection
8. 8.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the object we look at (b) the same light (c) the same mirrors (d) how clear the view is
9. 9.⚖️ 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
10. 10.🔭 Does a shiny steel plate 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) 45 degrees (c) 10 degrees (d) 180 degrees
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
13. 13.⚖️ 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 keep it the same (c) we change it
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 change it (b) we measure it (c) we keep it the same
15. 15.True or false: a shiny steel plate reflects light well. (a) False (b) True
16. 16.True or false: sticky tape is not needed for the periscope. (a) False (b) True
17. 17.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) a balloon (d) a magnet
18. 18.⚖️ 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) how clear the view is (c) the same carton (d) the angle of the mirrors
19. 19.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
20. 20.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) much bigger (b) flipped left to right (c) upside down only (d) in colour
21. 21.🧺 Which of these is not needed for the periscope? (a) a pencil (b) a balloon (c) two small mirrors (d) a ruler
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 rough wooden board (b) black cloth (c) dark soil (d) a mirror
24. 24.True or false: a ruler is needed for the periscope. (a) True (b) False
25. 25.⚖️ 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
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) a rough wooden board (d) dark soil
28. 28.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) yeast (d) sticky tape
31. 31.True or false: vinegar is not needed for the periscope. (a) False (b) True
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) a shiny steel plate (d) a dull brick
34. 34.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) a battery cell
35. 35.🔭 Which of these reflects light well? (a) black cloth (b) a shiny steel plate (c) a dull brick (d) dark soil
36. 36.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
37. 37.🧺 Which of these is not needed for the periscope? (a) a pencil (b) two small mirrors (c) yeast (d) a ruler
38. 38.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
39. 39.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) aluminium foil
40. 40.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) see in the dark (d) hear far sounds

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