Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 155 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same three liquids”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) throw the glass (d) pour it on the floor
4. 4.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
5. 5.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) water with food colour (c) a battery cell (d) cooking oil
7. 7.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a magnet (c) yeast (d) a spoon
8. 8.💧 Which change is this: wet hair drying? (a) condensation (b) melting (c) evaporation (d) freezing
9. 9.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a balloon (d) cooking oil
10. 10.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
11. 11.🥄 Which of these dissolves faster? (a) sugar stirred well (b) sugar in icy water (c) sugar left unstirred (d) a big sugar cube
12. 12.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same card
14. 14.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the sugar turns to salt (b) some stays undissolved (c) the water turns solid (d) all of it dissolves
15. 15.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
16. 16.True or false: honey is not needed for the density tower. (a) True (b) False
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
18. 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) yeast (c) two chairs (d) a long string
19. 19.🔍 Which is the odd one out? (a) a pebble (b) a cork (c) honey (d) a coin
20. 20.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
21. 21.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a balloon (d) a ruler
22. 22.True or false: a magnet is needed for the water cycle bowl. (a) False (b) True
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a balloon (c) a glass of water (d) a battery cell
25. 25.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a mirror (d) safety scissors
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) magnetism (d) evaporation
28. 28.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) a tall clear glass (c) a magnet (d) honey
29. 29.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
30. 30.True or false: a toy parachute falls fast through the air. (a) False (b) True
31. 31.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
32. 32.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) turmeric powder (c) a battery cell (d) a white flower
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
35. 35.🚀 In “push back, move forward”, which way does water from the oars go? (a) goes forward (b) goes backward
36. 36.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the time of day (b) brightness of rainbow (c) the same glass (d) the amount of water
38. 38.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the kind of sugar (b) the amount of sugar (c) the water temperature (d) the amount of water
39. 39.🛟 What should you do with wet floors after the experiment? (a) pour more water (b) wipe them dry (c) leave them wet (d) slide on them
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True

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