Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 720 · 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 “the object we look at”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.🧺 Do we need a balloon for the periscope? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) black cloth (d) a mirror
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) two small mirrors (c) a pencil (d) a balloon
6. 6.⚖️ 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
7. 7.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
8. 8.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) turmeric powder (d) a ruler
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) sticky tape (c) an empty juice carton (d) a magnet
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 change it (b) we measure it (c) we keep it the same
12. 12.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
13. 13.🔭 How many times does light bounce off a mirror in a simple periscope?
14. 14.True or false: a ruler is not needed for the periscope. (a) False (b) True
15. 15.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
16. 16.True or false: a balloon is needed for the periscope. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) a dull brick (c) black cloth (d) still clear water
18. 18.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a mirror (c) still clear water (d) a dull brick
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the angle of the mirrors (b) the same carton (c) the object we look at (d) the same light
20. 20.True or false: a rough wooden board reflects light poorly. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a dull brick
22. 22.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
23. 23.True or false: a magnet is not needed for the periscope. (a) False (b) True
24. 24.True or false: a mirror reflects light well. (a) True (b) False
25. 25.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) so light reaches the eye (d) to make it heavy
26. 26.True or false: still clear water reflects light well. (a) False (b) True
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) turmeric powder (d) sticky tape
28. 28.🧺 Which of these is needed for the periscope? (a) a balloon (b) yeast (c) two small mirrors (d) vinegar
29. 29.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
30. 30.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) the ground (c) taller walls (d) nothing at all
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
32. 32.🔍 Which is the odd one out? (a) aluminium foil (b) a shiny steel plate (c) a dull brick (d) a mirror
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
34. 34.🔭 Does dark soil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
35. 35.🔭 Which of these reflects light well? (a) dark soil (b) black cloth (c) a rough wooden board (d) a mirror
36. 36.⚖️ 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 object we look at (c) the angle of the mirrors
37. 37.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) vinegar (c) two small mirrors (d) an empty juice carton
38. 38.True or false: two small mirrors is not needed for the periscope. (a) True (b) False
39. 39.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
40. 40.⚖️ 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

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