Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 84 · 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: a balloon is needed for the periscope. (a) False (b) True
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.True or false: a pencil is not needed for the periscope. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) dark soil (b) black cloth (c) aluminium foil (d) a rough wooden board
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) a magnet (d) an empty juice carton
7. 7.⚖️ 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 light (c) the same mirrors (d) how clear the view is
8. 8.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) black cloth
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) True (b) False
10. 10.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
11. 11.🔭 Which of these reflects light poorly? (a) a mirror (b) a dull brick (c) aluminium foil (d) still clear water
12. 12.🔭 Which of these reflects light poorly? (a) a mirror (b) a shiny steel plate (c) dark soil (d) still clear water
13. 13.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) black cloth (d) a dull brick
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) flipped left to right (c) much bigger (d) in colour
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 germs (b) hear far sounds (c) see in the dark (d) see over a wall
17. 17.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) the Sun (c) a wall (d) a friend’s toy
18. 18.⚖️ 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 same mirrors (c) the object we look at (d) the same light
19. 19.🛟 Which mirrors are safest for a children’s periscope? (a) plastic safety mirrors (b) loose glass panes (c) big wall mirrors (d) broken glass bits
20. 20.⚖️ 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
21. 21.🔭 How many mirrors does a simple periscope use?
22. 22.🔍 Which is the odd one out? (a) a shiny steel plate (b) a dull brick (c) a rough wooden board (d) dark soil
23. 23.🧺 Which of these is needed for the periscope? (a) sticky tape (b) vinegar (c) yeast (d) a battery cell
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) a magnet (c) an empty juice carton (d) a ruler
25. 25.True or false: a battery cell is needed for the periscope. (a) True (b) False
26. 26.True or false: sticky tape is not needed for the periscope. (a) False (b) True
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.🧺 Do we need a balloon for the periscope? (a) needed (b) not needed
29. 29.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
30. 30.True or false: two small mirrors is needed for the periscope. (a) True (b) False
31. 31.🛟 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
32. 32.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) the same mirrors (c) how clear the view is
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) True (b) False
35. 35.True or false: black cloth reflects light well. (a) False (b) True
36. 36.True or false: a dull brick reflects light poorly. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
40. 40.True or false: a magnet is needed for the periscope. (a) True (b) False

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