Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 834 · 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.🔭 Why must the two mirrors face each other and be parallel? (a) so it looks shiny (b) so it can float (c) to make it heavy (d) so light reaches the eye
2. 2.True or false: an empty juice carton is needed for the periscope. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) aluminium foil (d) dark soil
4. 4.🔍 Which is the odd one out? (a) a rough wooden board (b) dark soil (c) a dull brick (d) still clear water
5. 5.True or false: a battery cell is needed for the periscope. (a) False (b) True
6. 6.🧺 Do we need vinegar for the periscope? (a) not needed (b) needed
7. 7.🛟 Who should cut the holes in the juice carton? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
8. 8.🧺 Do we need a battery cell for the periscope? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a ruler (c) two small mirrors (d) yeast
10. 10.🔍 Which is the odd one out? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
11. 11.🔍 Which is the odd one out? (a) black cloth (b) a rough wooden board (c) a shiny steel plate (d) a dull brick
12. 12.⚖️ 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 same carton (c) the angle of the mirrors
13. 13.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
14. 14.🔭 How many mirrors does a simple periscope use?
15. 15.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a balloon (d) a pencil
17. 17.🔍 Which is the odd one out? (a) a rough wooden board (b) still clear water (c) a shiny steel plate (d) a mirror
18. 18.🔭 Does still clear water reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.⚖️ 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 angle of the mirrors (c) the same light (d) the object we look at
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.🧺 Do we need two small mirrors for the periscope? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a battery cell (c) a pencil (d) a ruler
25. 25.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) aluminium foil (c) a mirror (d) a dull brick
26. 26.🔭 Does a shiny steel plate 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) broken glass bits (b) plastic safety mirrors (c) loose glass panes (d) big wall mirrors
28. 28.🔭 Which of these reflects light poorly? (a) still clear water (b) black cloth (c) aluminium foil (d) a mirror
29. 29.🧺 Which of these is needed for the periscope? (a) a battery cell (b) vinegar (c) a magnet (d) a pencil
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) sticky tape (d) a pencil
31. 31.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is what we measure. (a) False (b) True
32. 32.🔭 At what angle are the mirrors set in a simple periscope? (a) 180 degrees (b) 90 degrees (c) 45 degrees (d) 10 degrees
33. 33.🧺 Which of these is needed for the periscope? (a) sticky tape (b) a battery cell (c) a magnet (d) turmeric powder
34. 34.⚖️ 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) True (b) False
35. 35.🔭 How many times does light bounce off a mirror in a simple periscope?
36. 36.🔭 Which of these reflects light well? (a) still clear water (b) a dull brick (c) a rough wooden board (d) black cloth
37. 37.🔭 What does a periscope let you do? (a) see germs (b) hear far sounds (c) see over a wall (d) see in the dark
38. 38.🔍 Which is the odd one out? (a) dark soil (b) a mirror (c) a rough wooden board (d) black cloth
39. 39.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) taller walls (b) the ground (c) only short walls (d) nothing at all
40. 40.📘 Light bouncing off a mirror is called ___. (a) evaporation (b) refraction (c) magnetism (d) reflection

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