Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 302 · 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.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
2. 2.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
3. 3.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) two clear glasses (b) cotton wool (c) cold water (d) sugar
4. 4.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
5. 5.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) sugar (c) a balloon (d) a comb
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of water (b) the room it stands in (c) time for colour to show (d) the kind of flower
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there
8. 8.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) a strip of cloth (b) a sugar cube (c) a piece of foil (d) a paper towel
10. 10.🔮 Predict: the string slopes uphill. What happens? (a) it travels farther (b) it travels less far (c) it speeds up (d) it goes backward first
11. 11.🚁 Why does the paper helicopter fall slowly? (a) it has no weight (b) air pushes on its blades (c) the floor pushes it (d) a magnet holds it
12. 12.🛟 Which of these sinks in water? (a) a coin (b) a ping-pong ball (c) a dry leaf (d) an ice cube
13. 13.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) honey (c) a magnet (d) a clock or timer
14. 14.💧 Which change is this: snow turning to water? (a) evaporation (b) condensation (c) melting (d) freezing
15. 15.True or false: powdered sugar dissolves faster. (a) False (b) True
16. 16.🌈 In VIBGYOR, what number colour is green?
17. 17.🚁 Which of these falls fast through the air? (a) a paper helicopter (b) a feather (c) a stone (d) a toy parachute
18. 18.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a results table (d) a balloon
19. 19.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) ice cubes (b) sunlight (c) a small cup (d) turmeric powder
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a results table (d) a towel for spills
21. 21.🌼 Why do the petals keep pulling water up the stem? (a) petals are magnetic (b) the stem is hot (c) petals like colour (d) petals lose water to air
22. 22.🛟 Which scissors should children use to cut the paper? (a) a paper cutter (b) gardening shears (c) safety scissors (d) sharp kitchen shears
23. 23.True or false: an open sheet of paper falls fast through the air. (a) False (b) True
24. 24.True or false: sugar in icy water dissolves slower. (a) False (b) True
25. 25.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
26. 26.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the balloon (d) water a swimmer pushes
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of pouring (b) the order of the layers (c) the same three liquids (d) how much of each liquid
28. 28.🔍 What do you see after pouring honey, water and oil into one glass? (a) bubbles of gas (b) one mixed colour (c) the glass gets hot (d) three separate layers
29. 29.🧺 Do we need a tall clear glass for the density tower? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a piece of foil (b) a glass marble (c) a rubber eraser (d) a flower stem
31. 31.🥄 Which of these does not dissolve in water? (a) sugar (b) food colour (c) chalk powder (d) baking soda
32. 32.True or false: a balloon is needed for the balloon rocket. (a) True (b) False
33. 33.💧 Which of these does not let water climb? (a) a paper towel (b) a sugar cube (c) a plastic ruler (d) a cotton thread
34. 34.True or false: honey is not needed for the density tower. (a) False (b) True
35. 35.💧 Which change is this: a puddle drying up? (a) evaporation (b) melting (c) freezing (d) condensation
36. 36.True or false: water with food colour is not needed for the density tower. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) making ice lollies (b) a pond icing over (c) water becoming ice (d) wet hair drying
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🎈 When does the balloon rocket stop? (a) when it gets cold (b) it never stops (c) when the air runs out (d) when it turns blue
40. 40.True or false: a toy parachute falls fast through the air. (a) False (b) True

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