Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 985 · 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.True or false: making ice lollies is freezing. (a) True (b) False
2. 2.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) turmeric powder (d) a drinking straw
3. 3.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
4. 4.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
5. 5.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
6. 6.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a mirror (c) a battery cell (d) a tub of water
7. 7.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
8. 8.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
9. 9.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) a sheet of glass (c) the crumpled ball (d) the flat sheet
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
11. 11.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
12. 12.True or false: drops on a cold glass is condensation. (a) False (b) True
13. 13.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) baking soda (d) cooking oil
15. 15.🛟 What should you do with popped balloon pieces? (a) give them to a baby (b) chew them (c) throw them away safely (d) keep them in your mouth
16. 16.🚁 What does the paper helicopter do as it falls? (a) it stays still in air (b) it flies upward (c) it turns into a ball (d) it spins round
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
18. 18.🧺 Which of these is needed for the water cycle bowl? (a) turmeric powder (b) yeast (c) a magnet (d) water
19. 19.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
20. 20.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
21. 21.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
22. 22.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
23. 23.💧 Which change is this: a misty bathroom mirror? (a) freezing (b) melting (c) condensation (d) evaporation
24. 24.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
25. 25.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) honey (b) a tall clear glass (c) a mirror (d) a spoon
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of water (c) time for colour to show
28. 28.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a clock or timer (b) honey (c) sugar (d) warm water
29. 29.💧 Which change is this: a puddle drying up? (a) melting (b) freezing (c) condensation (d) evaporation
30. 30.🔍 Which is the odd one out? (a) a pebble (b) air (c) a cork (d) a ping-pong ball
31. 31.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) False (b) True
32. 32.True or false: the rocket goes backward. (a) True (b) False
33. 33.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) the time of day (c) the same window (d) brightness of rainbow
35. 35.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) yeast (d) honey
36. 36.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is the one thing we change. (a) False (b) True
37. 37.🚁 Which of these falls slowly through the air? (a) a stone (b) a fluff of cotton (c) a coin (d) a steel spoon
38. 38.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly
39. 39.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) honey (d) turmeric powder
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of colour (b) the length of the stem (c) time for colour to show (d) the kind of flower

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