Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 750 · 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.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
2. 2.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
3. 3.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🥄 Why does sugar dissolve faster in warm water? (a) warm water is thicker (b) cold water is wet (c) sugar likes the dark (d) particles move faster
7. 7.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) baking soda (d) sawdust
8. 8.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
9. 9.🛟 What should you do after handling food colour? (a) wipe them on walls (b) lick your fingers (c) wash your hands (d) rub your eyes
10. 10.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
12. 12.🍯 Why does honey sink to the bottom of the glass? (a) it is the stickiest (b) it is the coldest (c) it is yellow (d) it is the densest
13. 13.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice-cream stick (c) an iron nail (d) a ping-pong ball
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
15. 15.🎈 Why does the balloon rocket move along the string? (a) a magnet pulls it (b) the straw is heavy (c) the string pulls it (d) escaping air pushes it
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the kind of clay
17. 17.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) leave them wet (c) wipe them dry (d) pour more water
18. 18.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
19. 19.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.⚖️ 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 glass (b) the time of day (c) the same white paper (d) brightness of rainbow
21. 21.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) two chairs (d) turmeric powder
22. 22.⚖️ 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 order of pouring”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧺 Do we need water with food colour for the density tower? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a tub of water (c) a results table (d) a towel for spills
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a pencil (c) a ruler (d) yeast
26. 26.💧 Which of these is evaporation? (a) sweat drying on skin (b) drops under a pot lid (c) ice becoming water (d) a misty bathroom mirror
27. 27.🧺 Do we need cling film for the water cycle bowl? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a towel
29. 29.True or false: a clock or timer is not needed for the dissolving test. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a ball of clay (b) an ice cube (c) a dry leaf (d) a cork
31. 31.True or false: a big sugar cube dissolves slower. (a) False (b) True
32. 32.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
33. 33.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the honey layer (c) under the honey (d) in the water layer
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a magnet (c) a towel (d) a glass of water
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
36. 36.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is kept the same. (a) True (b) False
37. 37.True or false: powdered sugar dissolves slower. (a) True (b) False
38. 38.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
39. 39.🔮 Predict: you blow the balloon up only a little. What happens? (a) it turns into a kite (b) it goes less far (c) it flies off the string (d) it goes much farther
40. 40.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) two chairs (c) yeast (d) a drinking straw

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