Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 752 · 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 colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the kind of flower (b) the amount of colour (c) time for colour to show (d) the length of the stem
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
3. 3.True or false: honey is less dense than water. (a) True (b) False
4. 4.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: how many drops form is kept the same. (a) True (b) False
5. 5.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a sheet of white paper (d) a balloon
6. 6.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a balloon (c) two chairs (d) sticky tape
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
8. 8.True or false: a bicycle pump works by magnetism. (a) True (b) False
9. 9.True or false: cooking oil is not needed for the density tower. (a) False (b) True
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
11. 11.True or false: a few hours of waiting is needed for the coloured flower experiment. (a) False (b) True
12. 12.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
14. 14.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
15. 15.🛟 What should you do with popped balloon pieces? (a) throw them away safely (b) keep them in your mouth (c) give them to a baby (d) chew them
16. 16.True or false: water with food colour is not needed for the density tower. (a) False (b) True
17. 17.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.True or false: the balloon goes forward. (a) False (b) True
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🧺 Do we need turmeric powder for the paper helicopter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same string (b) how big we blow it (c) distance it travels (d) the slope of the string
24. 24.🍯 Why does honey sink to the bottom of the glass? (a) it is yellow (b) it is the stickiest (c) it is the coldest (d) it is the densest
25. 25.🧺 Do we need turmeric powder for the water cycle bowl? (a) needed (b) not needed
26. 26.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
27. 27.True or false: gas from the rocket goes forward. (a) False (b) True
28. 28.🥄 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) food colour (d) baking soda
29. 29.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
30. 30.🧺 Which of these is not needed for the density tower? (a) honey (b) cooking oil (c) a battery cell (d) a tall clear glass
31. 31.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) turmeric powder (c) a long string (d) a drinking straw
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a battery cell (c) a towel for spills (d) small test objects
33. 33.🧺 Do we need yeast for the water cycle bowl? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a big bowl (d) a magnet
35. 35.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
36. 36.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
37. 37.🧺 Which of these is needed for the density tower? (a) a magnet (b) a balloon (c) honey (d) a mirror
38. 38.💧 Which of these is melting? (a) drops under a pot lid (b) snow turning to water (c) wet clothes drying (d) making ice lollies
39. 39.🧺 Do we need a balloon for the paper helicopter? (a) not needed (b) needed
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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