Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 956 · 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 of these is not needed for the periscope? (a) two small mirrors (b) a balloon (c) a pencil (d) a ruler
2. 2.🔭 Which of these reflects light well? (a) a shiny steel plate (b) dark soil (c) black cloth (d) a dull brick
3. 3.🔭 Which of these reflects light poorly? (a) a mirror (b) still clear water (c) a shiny steel plate (d) dark soil
4. 4.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
5. 5.🛟 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
6. 6.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) much bigger (c) flipped left to right (d) upside down only
7. 7.🔭 How many times does light bounce off a mirror in a simple periscope?
8. 8.🔭 How many mirrors does a simple periscope use?
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) a friend’s toy (d) the Sun
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a ruler (d) a pencil
12. 12.🔭 Which of these reflects light well? (a) a mirror (b) a rough wooden board (c) a dull brick (d) black cloth
13. 13.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
14. 14.True or false: aluminium foil reflects light well. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) aluminium foil (b) a rough wooden board (c) a mirror (d) still clear water
16. 16.🧺 Which of these is needed for the periscope? (a) a balloon (b) a battery cell (c) vinegar (d) sticky tape
17. 17.🔮 Predict: you cover the top mirror with paper. What do you see? (a) only darkness (b) a rainbow (c) two pictures (d) a brighter view
18. 18.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a ruler (c) yeast (d) a pencil
19. 19.🔭 Who uses a periscope to look above the water? (a) a submarine crew (b) a pilot in a plane (c) a farmer (d) a baker
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) black cloth (c) a rough wooden board (d) a shiny steel plate
21. 21.🔭 What does a periscope let you do? (a) see over a wall (b) see in the dark (c) see germs (d) hear far sounds
22. 22.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) black cloth (c) still clear water (d) aluminium foil
23. 23.🔭 Which of these reflects light well? (a) a dull brick (b) still clear water (c) dark soil (d) a rough wooden board
24. 24.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same mirrors”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) nothing at all (c) the ground (d) only short walls
26. 26.🔭 Does a dull brick reflect light well or poorly? (a) reflects light poorly (b) reflects light well
27. 27.🛟 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
28. 28.🔭 At what angle are the mirrors set in a simple periscope? (a) 90 degrees (b) 10 degrees (c) 45 degrees (d) 180 degrees
29. 29.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
30. 30.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a battery cell (c) a pencil (d) two small mirrors
31. 31.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a magnet (c) a pencil (d) an empty juice carton
32. 32.📘 Light bouncing off a mirror is called ___. (a) magnetism (b) evaporation (c) reflection (d) refraction
33. 33.⚖️ 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
34. 34.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the same light (d) the angle of the mirrors
35. 35.True or false: still clear water reflects light well. (a) True (b) False
36. 36.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) two small mirrors (d) a magnet
37. 37.🧺 Do we need sticky tape for the periscope? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same mirrors is kept the same. (a) True (b) False
39. 39.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) a dull brick (d) aluminium foil
40. 40.🧺 Do we need yeast for the periscope? (a) not needed (b) needed

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