Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 130 · 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 the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.💧 Which of these is melting? (a) wet clothes drying (b) making ice lollies (c) ice becoming water (d) a puddle drying up
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) turmeric powder (c) a tall clear glass (d) a spoon
4. 4.True or false: dew on morning grass is condensation. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) air (b) a cork (c) honey (d) cooking oil
6. 6.True or false: a cotton thread does not let water climb. (a) False (b) True
7. 7.True or false: a mirror is not needed for the density tower. (a) False (b) True
8. 8.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) a sheet of glass (d) the flat sheet
9. 9.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
10. 10.📘 What do we call water with sugar dissolved in it? (a) a rainbow (b) a solution (c) a magnet (d) a crystal
11. 11.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
12. 12.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
13. 13.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) powdered sugar (d) both the same
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
15. 15.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
16. 16.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
17. 17.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) leave water on the floor (d) run around the tub
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.True or false: two clear glasses is not needed for the dissolving test. (a) False (b) True
20. 20.True or false: a paper helicopter falls fast through the air. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) sawdust (d) cooking oil
22. 22.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
23. 23.True or false: yeast is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🛟 Which of these floats on water? (a) an iron nail (b) a cork (c) a pebble (d) a coin
25. 25.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) a steel spoon (d) a ball of clay
26. 26.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
28. 28.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
29. 29.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) the amount of water (b) the amount of sugar (c) the water temperature (d) time to dissolve
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a results table (c) a balloon (d) a mirror
32. 32.🧺 Do we need a mirror for the water cycle bowl? (a) not needed (b) needed
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) drops on a cold glass (b) drops under a pot lid (c) wet clothes drying (d) dew on morning grass
36. 36.🍯 Why does honey sink to the bottom of the glass? (a) it is the densest (b) it is the coldest (c) it is yellow (d) it is the stickiest
37. 37.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) hot water can scald (c) it changes colour (d) hot water is heavy
38. 38.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) faster (b) they never dry (c) slower (d) they turn to ice
39. 39.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) chew them (c) throw them away safely (d) give them to a baby
40. 40.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls fast (b) falls slowly

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