Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 226 · 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.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) big wall mirrors (d) broken glass bits
2. 2.⚖️ 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) True (b) False
3. 3.True or false: still clear water reflects light poorly. (a) False (b) True
4. 4.🧺 Which of these is needed for the periscope? (a) vinegar (b) yeast (c) two small mirrors (d) a magnet
5. 5.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
6. 6.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is not needed for the periscope? (a) yeast (b) two small mirrors (c) a ruler (d) an empty juice carton
9. 9.🔭 How many times does light bounce off a mirror in a simple periscope?
10. 10.True or false: two small mirrors is needed for the periscope. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a dull brick (d) black cloth
12. 12.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a tree (c) a wall (d) a friend’s toy
13. 13.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
14. 14.True or false: a balloon is needed for the periscope. (a) True (b) False
15. 15.🛟 Who should cut the holes in the juice carton? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) only darkness (d) two pictures
17. 17.🔭 Does a dull brick reflect light well or poorly? (a) reflects light well (b) reflects light poorly
18. 18.🧺 Which of these is needed for the periscope? (a) vinegar (b) a ruler (c) a balloon (d) a magnet
19. 19.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) still clear water
20. 20.True or false: black cloth reflects light poorly. (a) True (b) False
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) sticky tape (c) two small mirrors (d) turmeric powder
22. 22.🔭 Which of these reflects light poorly? (a) still clear water (b) a rough wooden board (c) a mirror (d) a shiny steel plate
23. 23.⚖️ 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 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? True or false: the same light is kept the same. (a) False (b) True
25. 25.🧺 Do we need yeast for the periscope? (a) needed (b) not needed
26. 26.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) taller walls (c) nothing at all (d) the ground
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) an empty juice carton (c) a balloon (d) a ruler
28. 28.True or false: black cloth reflects light well. (a) True (b) False
29. 29.🔭 Which of these reflects light well? (a) still clear water (b) black cloth (c) a dull brick (d) a rough wooden board
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is the one thing we change. (a) False (b) True
32. 32.🧺 Which of these is not needed for the periscope? (a) vinegar (b) two small mirrors (c) an empty juice carton (d) a ruler
33. 33.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the same light (b) how clear the view is (c) the angle of the mirrors
34. 34.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a dull brick
35. 35.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) in colour (d) flipped left to right
36. 36.🔭 How many mirrors does a simple periscope use?
37. 37.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 45 degrees (c) 10 degrees (d) 90 degrees
38. 38.🔭 What does a periscope let you do? (a) see germs (b) see over a wall (c) see in the dark (d) hear far sounds
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) aluminium foil (d) a dull brick

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