Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 290 · 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.True or false: still clear water reflects light poorly. (a) False (b) True
2. 2.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
3. 3.True or false: turmeric powder is not needed for the periscope. (a) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is the one thing we change. (a) False (b) True
5. 5.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
6. 6.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) only short walls (d) taller walls
7. 7.🧺 Do we need a magnet for the periscope? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) dark soil (b) a dull brick (c) a rough wooden board (d) still clear water
9. 9.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
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) the angle of the mirrors (b) the same mirrors (c) the same light (d) the same carton
11. 11.🛟 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
12. 12.True or false: a dull brick reflects light poorly. (a) True (b) False
13. 13.True or false: a mirror reflects light well. (a) False (b) True
14. 14.⚖️ 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) False (b) True
15. 15.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a brighter view (c) only darkness (d) a rainbow
16. 16.🔭 How many times does light bounce off a mirror in a simple periscope?
17. 17.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) magnetism (c) refraction (d) reflection
18. 18.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a magnet (d) sticky tape
21. 21.🔭 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
22. 22.True or false: two small mirrors is needed for the periscope. (a) True (b) False
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
26. 26.🔭 How many mirrors does a simple periscope use?
27. 27.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) two small mirrors (c) a balloon (d) a pencil
28. 28.True or false: a pencil is not needed for the periscope. (a) True (b) False
29. 29.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) a mirror
30. 30.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a magnet (c) a balloon (d) yeast
31. 31.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
32. 32.🔍 Which is the odd one out? (a) a mirror (b) dark soil (c) black cloth (d) a rough wooden board
33. 33.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) in colour (c) much bigger (d) upside down only
34. 34.🔍 Which is the odd one out? (a) still clear water (b) a dull brick (c) aluminium foil (d) a mirror
35. 35.True or false: dark soil reflects light poorly. (a) False (b) True
36. 36.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) the Sun (c) a tree (d) a friend’s toy
37. 37.True or false: a magnet is needed for the periscope. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a shiny steel plate (b) dark soil (c) a rough wooden board (d) a dull brick
39. 39.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) still clear water (d) a rough wooden board
40. 40.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) vinegar (d) an empty juice carton

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