Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 216 · 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.True or false: a balloon is needed for the periscope. (a) True (b) False
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a friend’s toy (c) a wall (d) the Sun
4. 4.True or false: a balloon is not needed for the periscope. (a) False (b) True
5. 5.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a magnet (b) a ruler (c) an empty juice carton (d) sticky tape
6. 6.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) an empty juice carton (c) a magnet (d) a ruler
7. 7.🛟 Which mirrors are safest for a children’s periscope? (a) loose glass panes (b) plastic safety mirrors (c) broken glass bits (d) big wall mirrors
8. 8.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) so it looks shiny (d) to make it heavy
9. 9.🛟 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
10. 10.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🔭 What does a periscope let you do? (a) see in the dark (b) hear far sounds (c) see over a wall (d) see germs
12. 12.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a pencil (b) two small mirrors (c) sticky tape (d) a battery cell
13. 13.🧺 Which of these is not needed for the periscope? (a) sticky tape (b) an empty juice carton (c) vinegar (d) a ruler
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) how clear the view is (b) the same light (c) the angle of the mirrors (d) the object we look at
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same mirrors (c) the same light (d) the angle of the mirrors
16. 16.🔍 Which is the odd one out? (a) a mirror (b) still clear water (c) a rough wooden board (d) aluminium foil
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 ruler (b) a pencil (c) two small mirrors (d) a balloon
19. 19.🧺 Which of these is needed for the periscope? (a) yeast (b) vinegar (c) a magnet (d) an empty juice carton
20. 20.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) a dull brick (d) still clear water
21. 21.🧺 Which of these is needed for the periscope? (a) turmeric powder (b) yeast (c) a balloon (d) a ruler
22. 22.🔭 Which of these reflects light poorly? (a) a shiny steel plate (b) a mirror (c) still clear water (d) a rough wooden board
23. 23.True or false: a mirror reflects light poorly. (a) False (b) True
24. 24.🔭 How many mirrors does a simple periscope use?
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) in colour (b) upside down only (c) much bigger (d) flipped left to right
28. 28.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) dark soil (d) a mirror
29. 29.🧺 Do we need an empty juice carton for the periscope? (a) needed (b) not needed
30. 30.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
31. 31.🔍 Which is the odd one out? (a) aluminium foil (b) a mirror (c) still clear water (d) dark soil
32. 32.🔭 Does a mirror reflect light well or poorly? (a) reflects light poorly (b) reflects light well
33. 33.🧺 Do we need two small mirrors for the periscope? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) aluminium foil (c) still clear water (d) black cloth
35. 35.True or false: a pencil is needed for the periscope. (a) True (b) False
36. 36.True or false: a dull brick reflects light well. (a) False (b) True
37. 37.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a rainbow (b) two pictures (c) only darkness (d) a brighter view
38. 38.⚖️ 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
39. 39.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) magnetism (d) refraction
40. 40.True or false: dark soil reflects light well. (a) False (b) True

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