Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 895 · 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.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: yeast is not needed for the balloon rocket. (a) True (b) False
4. 4.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is the one thing we change. (a) True (b) False
5. 5.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) the water turns red (b) fewer drops form (c) more drops form (d) the bowl freezes
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
7. 7.⚖️ 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 same three liquids”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) the cling film cover (b) the amount of water (c) sun or shade (d) the size of the bowl
9. 9.True or false: a paper clip is needed for the paper helicopter. (a) True (b) False
10. 10.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
11. 11.🛟 Why should only a grown-up handle any hot water? (a) hot water is magnetic (b) it changes colour (c) hot water can scald (d) hot water is heavy
12. 12.🔍 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
13. 13.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a medicine dropper (d) a magnetic chess set
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) a glass of water (d) food colour
15. 15.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) particles move faster (c) cold water is wet (d) warm water is thicker
16. 16.🧺 Which of these is needed for the dissolving test? (a) a clock or timer (b) a magnet (c) honey (d) a balloon
17. 17.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
18. 18.⚖️ 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 kind of clay (b) the tub of water (c) the shape of the clay (d) the amount of clay
19. 19.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🛟 Which of these floats on water? (a) a feather (b) a ball of clay (c) a pebble (d) a coin
21. 21.True or false: sugar in icy water dissolves faster. (a) True (b) False
22. 22.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
23. 23.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they stay white (c) they fall off at once (d) they turn two colours
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the way we turn it (b) whether the card stays (c) the same card (d) how full the glass is
25. 25.🧺 Which of these is needed for the density tower? (a) a balloon (b) a battery cell (c) yeast (d) water with food colour
26. 26.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it turns to plastic (d) it sinks at once
27. 27.🧺 Do we need a magnet for the paper helicopter? (a) needed (b) not needed
28. 28.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a balloon rocket (c) a fridge magnet (d) a sundial
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) run around the tub (d) play near a deep pond
30. 30.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) air pressure (c) the wind (d) gravity
32. 32.🍯 Which of these is denser than water? (a) a ping-pong ball (b) air (c) an ice cube (d) a coin
33. 33.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) pour it on the floor (c) taste each layer (d) throw the glass
34. 34.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
35. 35.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it gets too heavy (d) it turns into a kite
36. 36.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through tiny stem tubes (d) through the air
37. 37.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is kept the same? (a) sun or shade (b) the amount of water (c) how many drops form
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) how full the glass is (c) the same card (d) the same glass
39. 39.🧺 Do we need a magnet for the water cycle bowl? (a) not needed (b) needed
40. 40.🎈 When does the balloon rocket stop? (a) when it gets cold (b) when the air runs out (c) it never stops (d) when it turns blue

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