Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 783 · 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? What do we do with “how clear the view is”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a shiny steel plate
3. 3.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a battery cell (c) a pencil (d) an empty juice carton
4. 4.🔍 Which is the odd one out? (a) a dull brick (b) a shiny steel plate (c) aluminium foil (d) a mirror
5. 5.🔭 Which of these reflects light well? (a) black cloth (b) a rough wooden board (c) dark soil (d) aluminium foil
6. 6.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a rough wooden board
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
9. 9.🔭 Which of these reflects light poorly? (a) black cloth (b) still clear water (c) a shiny steel plate (d) aluminium foil
10. 10.🧺 Which of these is needed for the periscope? (a) a balloon (b) two small mirrors (c) a battery cell (d) yeast
11. 11.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a dull brick
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a pencil (c) an empty juice carton (d) vinegar
13. 13.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
14. 14.⚖️ 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 carton
15. 15.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a magnet (c) a pencil (d) an empty juice carton
16. 16.🔮 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
17. 17.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
19. 19.🔭 How many times does light bounce off a mirror in a simple periscope?
20. 20.True or false: a shiny steel plate reflects light well. (a) False (b) True
21. 21.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) only darkness (c) a rainbow (d) a brighter view
22. 22.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a balloon (c) a pencil (d) two small mirrors
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
25. 25.True or false: a mirror reflects light poorly. (a) True (b) False
26. 26.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) plastic safety mirrors (c) broken glass bits (d) loose glass panes
27. 27.🔭 Which of these reflects light well? (a) a rough wooden board (b) black cloth (c) still clear water (d) dark soil
28. 28.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the object we look at (c) the angle of the mirrors (d) the same light
31. 31.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a mirror (b) aluminium foil (c) black cloth (d) still clear water
34. 34.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
35. 35.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
36. 36.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection
37. 37.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
38. 38.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
39. 39.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the angle of the mirrors (b) the object we look at (c) the same carton (d) how clear the view is

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