Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 606 · 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.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) in colour (c) flipped left to right (d) much bigger
2. 2.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) refraction (c) reflection (d) evaporation
3. 3.⚖️ 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) True (b) False
4. 4.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a pencil (c) a magnet (d) sticky tape
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🔭 How many times does light bounce off a mirror in a simple periscope?
7. 7.🧺 Which of these is not needed for the periscope? (a) a balloon (b) an empty juice carton (c) two small mirrors (d) sticky tape
8. 8.True or false: two small mirrors is needed for the periscope. (a) False (b) True
9. 9.True or false: a balloon is needed for the periscope. (a) True (b) False
10. 10.🔭 Which of these reflects light poorly? (a) black cloth (b) a shiny steel plate (c) a mirror (d) still clear water
11. 11.🧺 Do we need yeast for the periscope? (a) not needed (b) needed
12. 12.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
13. 13.True or false: turmeric powder is not needed for the periscope. (a) True (b) False
14. 14.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) broken glass bits (c) big wall mirrors (d) loose glass panes
15. 15.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) only short walls (c) the ground (d) nothing at all
16. 16.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) hear far sounds (d) see germs
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
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) False (b) True
19. 19.🔭 How many mirrors does a simple periscope use?
20. 20.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) sticky tape (c) turmeric powder (d) a ruler
21. 21.True or false: vinegar is not needed for the periscope. (a) False (b) True
22. 22.🧺 Which of these is needed for the periscope? (a) a ruler (b) turmeric powder (c) a battery cell (d) a magnet
23. 23.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
24. 24.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
25. 25.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a balloon (c) a pencil (d) sticky tape
26. 26.True or false: a mirror reflects light poorly. (a) False (b) True
27. 27.True or false: still clear water reflects light well. (a) False (b) True
28. 28.True or false: a dull brick reflects light poorly. (a) True (b) False
29. 29.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
30. 30.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the object we look at (c) the same mirrors (d) the angle of the mirrors
31. 31.🧺 Do we need turmeric powder for the periscope? (a) needed (b) not needed
32. 32.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.True or false: a shiny steel plate reflects light poorly. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the periscope. (a) True (b) False
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is what we measure. (a) False (b) True
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.⚖️ 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) the angle of the mirrors (c) how clear the view is
38. 38.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) two small mirrors (c) a pencil (d) yeast
39. 39.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the object we look at (b) the angle of the mirrors (c) how clear the view is
40. 40.True or false: a shiny steel plate reflects light well. (a) False (b) True

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