Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 551 · 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.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) reflection (c) refraction (d) magnetism
2. 2.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the object we look at is the one thing we change. (a) False (b) True
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same light”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🔭 How many times does light bounce off a mirror in a simple periscope?
6. 6.🛟 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
7. 7.🔍 Which is the odd one out? (a) still clear water (b) a mirror (c) black cloth (d) aluminium foil
8. 8.🧺 Which of these is needed for the periscope? (a) a ruler (b) vinegar (c) a balloon (d) turmeric powder
9. 9.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is kept the same. (a) True (b) False
10. 10.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) two small mirrors (c) a battery cell (d) an empty juice carton
11. 11.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a balloon (d) two small mirrors
12. 12.⚖️ 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 light (c) how clear the view is
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) yeast (c) an empty juice carton (d) a pencil
14. 14.🔮 Predict: you cover the top mirror with paper. What do you see? (a) two pictures (b) a rainbow (c) a brighter view (d) only darkness
15. 15.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
16. 16.🧺 Which of these is not needed for the periscope? (a) a ruler (b) an empty juice carton (c) two small mirrors (d) turmeric powder
17. 17.⚖️ 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 change it (c) we measure it
18. 18.⚖️ 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) False (b) True
19. 19.True or false: a rough wooden board reflects light well. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a dull brick (b) a rough wooden board (c) still clear water (d) black cloth
21. 21.True or false: a mirror reflects light well. (a) True (b) False
22. 22.🔭 Which of these reflects light well? (a) a dull brick (b) black cloth (c) still clear water (d) dark soil
23. 23.🔭 How many mirrors does a simple periscope use?
24. 24.⚖️ 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 mirrors (c) the same light (d) how clear the view is
25. 25.⚖️ 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
26. 26.⚖️ 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) False (b) True
27. 27.🔭 Does aluminium foil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
28. 28.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) yeast (d) two small mirrors
29. 29.⚖️ 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) True (b) False
30. 30.🔍 Which is the odd one out? (a) still clear water (b) a shiny steel plate (c) dark soil (d) aluminium foil
31. 31.🛟 You must never point a periscope or a mirror at ___. (a) a friend’s toy (b) a tree (c) the Sun (d) a wall
32. 32.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see in the dark (d) see over a wall
33. 33.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) nothing at all (d) only short walls
34. 34.True or false: a ruler is not needed for the periscope. (a) True (b) False
35. 35.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) yeast (d) two small mirrors
36. 36.🛟 Who should cut the holes in the juice carton? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
37. 37.⚖️ 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 carton (c) how clear the view is
38. 38.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) an empty juice carton (b) sticky tape (c) a ruler (d) vinegar
40. 40.🧺 Which of these is not needed for the periscope? (a) a battery cell (b) an empty juice carton (c) a ruler (d) sticky tape

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids