Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 831 · 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.🛟 You must never point a periscope or a mirror at ___. (a) the Sun (b) a wall (c) a tree (d) a friend’s toy
2. 2.True or false: still clear water reflects light poorly. (a) False (b) True
3. 3.🔭 Which of these reflects light well? (a) a rough wooden board (b) dark soil (c) black cloth (d) a mirror
4. 4.🧺 Which of these is needed for the periscope? (a) a battery cell (b) turmeric powder (c) a magnet (d) sticky tape
5. 5.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) the same light (b) the object we look at (c) how clear the view is (d) the angle of the mirrors
6. 6.🛟 Which mirrors are safest for a children’s periscope? (a) broken glass bits (b) loose glass panes (c) big wall mirrors (d) plastic safety mirrors
7. 7.🔍 Which is the odd one out? (a) a rough wooden board (b) black cloth (c) dark soil (d) a mirror
8. 8.🔭 How many times does light bounce off a mirror in a simple periscope?
9. 9.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) turmeric powder (b) an empty juice carton (c) a ruler (d) two small mirrors
10. 10.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) a rough wooden board (d) still clear water
11. 11.🔭 Does still clear water reflect light well or poorly? (a) reflects light well (b) reflects light poorly
12. 12.🔮 Predict: you hold a written word up to a mirror. The letters look ___. (a) upside down only (b) much bigger (c) flipped left to right (d) in colour
13. 13.True or false: sticky tape is needed for the periscope. (a) False (b) True
14. 14.True or false: a mirror reflects light poorly. (a) False (b) True
15. 15.🔭 How many mirrors does a simple periscope use?
16. 16.🔮 Predict: you cover the top mirror with paper. What do you see? (a) a brighter view (b) two pictures (c) a rainbow (d) only darkness
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🧺 Which of these is needed for the periscope? (a) a magnet (b) vinegar (c) a balloon (d) a pencil
19. 19.🔭 Which of these reflects light well? (a) a shiny steel plate (b) a rough wooden board (c) a dull brick (d) black cloth
20. 20.True or false: a shiny steel plate reflects light well. (a) False (b) True
21. 21.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) two small mirrors (b) a ruler (c) a battery cell (d) sticky tape
22. 22.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) an empty juice carton (c) a pencil (d) two small mirrors
24. 24.🛟 Who should cut the holes in the juice carton? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
25. 25.🧺 Do we need sticky tape for the periscope? (a) not needed (b) needed
26. 26.🔭 What does a periscope let you do? (a) see over a wall (b) see germs (c) hear far sounds (d) see in the dark
27. 27.⚖️ 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
28. 28.True or false: a rough wooden board reflects light well. (a) False (b) True
29. 29.📘 Light bouncing off a mirror is called ___. (a) refraction (b) magnetism (c) reflection (d) evaporation
30. 30.🧺 Do we need turmeric powder for the periscope? (a) not needed (b) needed
31. 31.🔭 Which of these reflects light well? (a) black cloth (b) still clear water (c) a dull brick (d) a rough wooden board
32. 32.🔍 Which is the odd one out? (a) a mirror (b) a shiny steel plate (c) still clear water (d) dark soil
33. 33.🔭 Which of these reflects light well? (a) a dull brick (b) dark soil (c) black cloth (d) aluminium foil
34. 34.🧺 Do we need a ruler for the periscope? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the periscope? (a) vinegar (b) a balloon (c) a ruler (d) a magnet
37. 37.True or false: vinegar is needed for the periscope. (a) True (b) False
38. 38.🧺 Which of these is not needed for the periscope? (a) two small mirrors (b) a pencil (c) a balloon (d) sticky tape
39. 39.⚖️ 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 change it (c) we measure it
40. 40.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly

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