Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 142 · 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 reflects light well? (a) a rough wooden board (b) a shiny steel plate (c) black cloth (d) dark soil
2. 2.🧺 Do we need a pencil for the periscope? (a) not needed (b) needed
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: how clear the view is is the one thing we change. (a) True (b) False
4. 4.🧺 Which of these is needed for the periscope? (a) a magnet (b) a battery cell (c) sticky tape (d) turmeric powder
5. 5.True or false: a magnet is needed for the periscope. (a) True (b) False
6. 6.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
7. 7.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
8. 8.🔭 What does a periscope let you do? (a) see in the dark (b) see over a wall (c) hear far sounds (d) see germs
9. 9.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
10. 10.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) only short walls (b) nothing at all (c) the ground (d) taller walls
11. 11.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “how clear the view is”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) big wall mirrors (c) loose glass panes (d) plastic safety mirrors
13. 13.🔭 How many mirrors does a simple periscope use?
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is what we measure. (a) False (b) True
15. 15.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) flipped left to right (b) upside down only (c) in colour (d) much bigger
16. 16.True or false: black cloth reflects light well. (a) False (b) True
17. 17.🔭 Does a shiny steel plate reflect light well or poorly? (a) reflects light poorly (b) reflects light well
18. 18.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a battery cell (b) sticky tape (c) an empty juice carton (d) a ruler
19. 19.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) a rainbow (c) two pictures (d) only darkness
20. 20.🔭 Which of these reflects light poorly? (a) still clear water (b) aluminium foil (c) a shiny steel plate (d) dark soil
21. 21.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
22. 22.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) a ruler (c) a pencil (d) a balloon
23. 23.🧺 Which of these is not needed for the periscope? (a) a pencil (b) an empty juice carton (c) yeast (d) sticky tape
24. 24.🛟 You must never point a periscope or a mirror at ___. (a) a wall (b) a tree (c) a friend’s toy (d) the Sun
25. 25.🔭 How many times does light bounce off a mirror in a simple periscope?
26. 26.🧺 Which of these is needed for the periscope? (a) two small mirrors (b) a balloon (c) a magnet (d) turmeric powder
27. 27.📘 Light bouncing off a mirror is called ___. (a) reflection (b) magnetism (c) evaporation (d) refraction
28. 28.🧺 Do we need an empty juice carton for the periscope? (a) not needed (b) needed
29. 29.🔍 Which is the odd one out? (a) dark soil (b) a shiny steel plate (c) a rough wooden board (d) a dull brick
30. 30.True or false: still clear water reflects light poorly. (a) False (b) True
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) black cloth (d) still clear water
33. 33.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light well (b) reflects light poorly
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the same carton (b) the same light (c) the angle of the mirrors (d) the object we look at
36. 36.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
37. 37.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so it looks shiny (c) to make it heavy (d) so light reaches the eye
38. 38.True or false: two small mirrors is needed for the periscope. (a) True (b) False
39. 39.🧺 Do we need a battery cell for the periscope? (a) not needed (b) needed
40. 40.🔭 Which of these reflects light well? (a) dark soil (b) a mirror (c) a dull brick (d) a rough wooden board

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