Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 249 · 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 object we look at is kept the same. (a) False (b) True
2. 2.True or false: a ruler is not needed for the periscope. (a) False (b) True
3. 3.📘 Light bouncing off a mirror is called ___. (a) refraction (b) evaporation (c) magnetism (d) reflection
4. 4.⚖️ 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 same mirrors (c) the angle of the mirrors
5. 5.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) a shiny steel plate (d) black cloth
6. 6.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
7. 7.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) yeast (c) a pencil (d) sticky tape
8. 8.True or false: aluminium foil reflects light well. (a) False (b) True
9. 9.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 180 degrees (c) 10 degrees (d) 45 degrees
10. 10.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) big wall mirrors (c) broken glass bits (d) plastic safety mirrors
11. 11.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
13. 13.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) still clear water (d) aluminium foil
14. 14.⚖️ 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 same mirrors (d) the angle of the mirrors
15. 15.🧺 Do we need a ruler for the periscope? (a) needed (b) not needed
16. 16.True or false: a dull brick reflects light poorly. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) dark soil (d) a dull brick
18. 18.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
19. 19.⚖️ 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
20. 20.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a rough wooden board (d) a dull brick
21. 21.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) sticky tape (d) a battery cell
22. 22.🧺 Which of these is needed for the periscope? (a) an empty juice carton (b) a battery cell (c) vinegar (d) a balloon
23. 23.🔭 What does a periscope let you do? (a) hear far sounds (b) see germs (c) see over a wall (d) see in the dark
24. 24.True or false: a magnet is not needed for the periscope. (a) True (b) False
25. 25.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
26. 26.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
27. 27.🔭 Why must the two mirrors face each other and be parallel? (a) so light reaches the eye (b) so it looks shiny (c) so it can float (d) to make it heavy
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same carton (b) how clear the view is (c) the angle of the mirrors
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is what we measure. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: a rough wooden board reflects light poorly. (a) False (b) True
33. 33.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
34. 34.🔭 Which of these reflects light well? (a) a dull brick (b) a rough wooden board (c) black cloth (d) a shiny steel plate
35. 35.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the periscope? (a) a balloon (b) a ruler (c) a magnet (d) vinegar
37. 37.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔭 How many times does light bounce off a mirror in a simple periscope?
39. 39.🧺 Which of these is not needed for the periscope? (a) a ruler (b) two small mirrors (c) a pencil (d) a magnet
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well

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