Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 854 · 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? Which of these is kept the same? (a) how clear the view is (b) the angle of the mirrors (c) the object we look at
2. 2.⚖️ 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
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is kept the same. (a) True (b) False
5. 5.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) two small mirrors (c) a battery cell (d) yeast
6. 6.🔭 At what angle are the mirrors set in a simple periscope? (a) 45 degrees (b) 10 degrees (c) 180 degrees (d) 90 degrees
7. 7.True or false: aluminium foil reflects light well. (a) True (b) False
8. 8.🔭 Which of these reflects light poorly? (a) black cloth (b) a mirror (c) still clear water (d) aluminium foil
9. 9.⚖️ 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 object we look at (c) the same carton (d) the angle of the mirrors
10. 10.True or false: dark soil reflects light poorly. (a) True (b) False
11. 11.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
15. 15.True or false: a rough wooden board reflects light poorly. (a) True (b) False
16. 16.🧺 Which of these is needed for the periscope? (a) a ruler (b) a magnet (c) a battery cell (d) yeast
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a ruler (c) an empty juice carton (d) turmeric powder
19. 19.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) a ruler (c) two small mirrors (d) turmeric powder
20. 20.🔭 Which of these reflects light well? (a) aluminium foil (b) dark soil (c) a dull brick (d) a rough wooden board
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) two small mirrors (d) a ruler
22. 22.🧺 Which of these is needed for the periscope? (a) a battery cell (b) a magnet (c) a pencil (d) yeast
23. 23.True or false: a mirror reflects light poorly. (a) False (b) True
24. 24.True or false: a battery cell is not needed for the periscope. (a) True (b) False
25. 25.⚖️ 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) True (b) False
26. 26.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) see germs (d) hear far sounds
27. 27.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same mirrors (b) the angle of the mirrors (c) how clear the view is (d) the same light
29. 29.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light poorly (b) reflects light well
30. 30.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
31. 31.🔭 How many mirrors does a simple periscope use?
32. 32.True or false: an empty juice carton is needed for the periscope. (a) False (b) True
33. 33.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) an empty juice carton (d) a pencil
34. 34.🔮 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
35. 35.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) broken glass bits (c) big wall mirrors (d) plastic safety mirrors
36. 36.True or false: black cloth reflects light poorly. (a) False (b) True
37. 37.🔭 Which of these reflects light poorly? (a) aluminium foil (b) a shiny steel plate (c) a mirror (d) a rough wooden board
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is kept the same. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) black cloth (b) a dull brick (c) aluminium foil (d) a rough wooden board
40. 40.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we change it (b) we measure it (c) we keep it the same

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