Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 56 · 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 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
2. 2.True or false: a magnet is needed for the coloured flower experiment. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
4. 4.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) the water increases (c) it turns to salt (d) some water evaporates
5. 5.🔍 Which is the odd one out? (a) butter going runny (b) ice becoming water (c) snow turning to water (d) a misty bathroom mirror
6. 6.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
7. 7.🧺 Which of these is needed for the coloured flower experiment? (a) a glass of water (b) turmeric powder (c) a battery cell (d) a mirror
8. 8.True or false: a flower stem lets water climb up it. (a) True (b) False
9. 9.🧺 Which of these is needed for the water cycle bowl? (a) a big bowl (b) a balloon (c) turmeric powder (d) a magnet
10. 10.🌈 In VIBGYOR, what number colour is indigo?
11. 11.True or false: cooking oil is not needed for the density tower. (a) True (b) False
12. 12.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
13. 13.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
15. 15.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) sticky tape (c) a balloon (d) two chairs
16. 16.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
17. 17.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) three separate layers (c) bubbles of gas (d) the glass gets hot
18. 18.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they mix for ever (b) they become solid (c) they separate again (d) they turn to honey
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
20. 20.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) the order of the layers (c) the same three liquids
23. 23.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) a magnet pulls it (c) the string pulls it (d) the straw is heavy
24. 24.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) sugar (b) cold water (c) a mirror (d) warm water
25. 25.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) wipe them dry (d) leave them wet
26. 26.🥄 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) cooking oil (d) chalk powder
27. 27.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a battery cell (d) cooking oil
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
29. 29.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
30. 30.🔍 Which is the odd one out? (a) a stone (b) a glass marble (c) a steel spoon (d) a paper helicopter
31. 31.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the flat sheet (b) a sheet of glass (c) neither of them (d) the crumpled ball
32. 32.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a wobbly chair (c) a roof edge (d) a high window ledge
33. 33.True or false: air is less dense than water. (a) True (b) False
34. 34.🧺 Which of these is needed for the water cycle bowl? (a) yeast (b) a battery cell (c) a mirror (d) water
35. 35.💧 Which of these is condensation? (a) sweat drying on skin (b) a puddle drying up (c) dew on morning grass (d) making ice lollies
36. 36.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🛟 How should you check if the sugar has dissolved? (a) taste it (b) poke it with a finger (c) look for leftover grains (d) smell it closely
39. 39.🧺 Which of these is needed for the density tower? (a) turmeric powder (b) a mirror (c) a magnet (d) cooking oil
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) False (b) True

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