Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 350 · 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.🛟 How should you check if the sugar has dissolved? (a) taste it (b) look for leftover grains (c) poke it with a finger (d) smell it closely
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
3. 3.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
4. 4.🎈 What is the job of the straw on the string? (a) it guides the balloon (b) it holds water (c) it makes it heavier (d) it blows air in
5. 5.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a strip of paper (d) turmeric powder
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the kind of clay (d) the amount of clay
7. 7.🛟 Who should pour the warm water in the dissolving test? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
9. 9.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to ice (b) it turns to salt (c) the water increases (d) some water evaporates
10. 10.🧺 Do we need ice cubes for the water cycle bowl? (a) not needed (b) needed
11. 11.True or false: a mirror is needed for the water cycle bowl. (a) False (b) True
12. 12.🧺 Do we need a mirror for the balloon rocket? (a) needed (b) not needed
13. 13.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a white flower (c) a mirror (d) turmeric powder
14. 14.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a mirror (b) a tall clear glass (c) honey (d) cooking oil
15. 15.⚖️ 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) True (b) False
16. 16.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a vacuum cleaner (d) a magnetic chess set
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the shape of the clay (b) the kind of clay (c) the tub of water (d) whether it floats
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) a pebble (c) honey (d) a coin
20. 20.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a roof edge (c) a wobbly chair (d) from your raised hand
21. 21.🍯 Is very salty water denser or less dense than water? (a) denser than water (b) less dense than water
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sunny window
24. 24.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) hot water is magnetic (c) hot water can scald (d) it changes colour
25. 25.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) a mirror (d) honey
27. 27.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a pet (d) a toddler
28. 28.🧺 Do we need a tall clear glass for the density tower? (a) needed (b) not needed
29. 29.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a bicycle pump
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) yeast
32. 32.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) at the very bottom (d) in the water layer
33. 33.🔍 Which is the odd one out? (a) sand (b) sugar (c) sawdust (d) cooking oil
34. 34.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) sunlight (c) a small cup (d) a magnet
35. 35.🧺 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 mirror (c) a towel (d) a glass of water
36. 36.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
37. 37.🛟 Which of these sinks in water? (a) a dry leaf (b) an empty capped bottle (c) a cork (d) a coin
38. 38.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) water with food colour (c) yeast (d) a spoon
39. 39.🔍 Which is the odd one out? (a) sugar (b) table salt (c) small pebbles (d) baking soda
40. 40.🔍 Which is the odd one out? (a) a dry leaf (b) a metal key (c) an iron nail (d) a pebble

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