Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 929 · 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.🛟 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
2. 2.True or false: a ruler is not needed for the periscope. (a) True (b) False
3. 3.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: a mirror reflects light poorly. (a) True (b) False
6. 6.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
7. 7.True or false: a rough wooden board reflects light poorly. (a) False (b) True
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🔭 Which of these reflects light poorly? (a) black cloth (b) aluminium foil (c) a mirror (d) a shiny steel plate
10. 10.⚖️ 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 same mirrors (c) the angle of the mirrors (d) the same light
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
13. 13.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
14. 14.🔮 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
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔭 Which of these reflects light well? (a) dark soil (b) still clear water (c) black cloth (d) a rough wooden board
17. 17.True or false: yeast is needed for the periscope. (a) True (b) False
18. 18.⚖️ 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
19. 19.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a wall (c) a tree (d) the Sun
20. 20.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a magnet (c) a pencil (d) two small mirrors
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) turmeric powder (c) sticky tape (d) an empty juice carton
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick
23. 23.True or false: a pencil is needed for the periscope. (a) True (b) False
24. 24.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) two small mirrors (c) a ruler (d) vinegar
25. 25.📘 Light bouncing off a mirror is called ___. (a) reflection (b) refraction (c) evaporation (d) magnetism
26. 26.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) True (b) False
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a dull brick (d) black cloth
30. 30.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) aluminium foil (d) a shiny steel plate
31. 31.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
32. 32.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is what we measure. (a) True (b) False
33. 33.🧺 Do we need vinegar for the periscope? (a) needed (b) not needed
34. 34.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
35. 35.🧺 Which of these is not needed for the periscope? (a) a ruler (b) a balloon (c) an empty juice carton (d) a pencil
36. 36.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) still clear water (d) a mirror
37. 37.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
38. 38.True or false: vinegar is needed for the periscope. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a shiny steel plate
40. 40.🧺 Which of these is needed for the periscope? (a) a balloon (b) a magnet (c) turmeric powder (d) a pencil

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