Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 800 · 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 bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🚁 Dropped from a raised hand, does a paper helicopter fall slowly or fast? (a) falls fast (b) falls slowly
3. 3.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
5. 5.🧺 Do we need yeast for the balloon rocket? (a) not needed (b) needed
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) time for colour to show (b) the amount of colour (c) the length of the stem
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is what we measure. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a glass marble (b) very salty water (c) honey (d) air
9. 9.🧺 Do we need a mirror for the density tower? (a) not needed (b) needed
10. 10.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same three liquids is kept the same. (a) True (b) False
11. 11.🥄 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) cling film (b) a big bowl (c) turmeric powder (d) water
13. 13.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) it rains on them (c) through the air (d) through tiny stem tubes
16. 16.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
17. 17.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) two clear glasses (c) honey (d) a clock or timer
18. 18.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) a white flower (d) a magnet
19. 19.🧺 Do we need two clear glasses for the dissolving test? (a) not needed (b) needed
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
21. 21.💧 Why do water drops form on the outside of a glass of ice water? (a) the glass sweats (b) vapour in air cools (c) the glass leaks (d) ice escapes the glass
22. 22.True or false: cooking oil is denser than water. (a) False (b) True
23. 23.💧 Which of these is condensation? (a) ice becoming water (b) a puddle drying up (c) wet clothes drying (d) drops under a pot lid
24. 24.🔍 Which is the odd one out? (a) a cork (b) cooking oil (c) honey (d) an ice cube
25. 25.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.True or false: air from the balloon goes forward. (a) True (b) False
27. 27.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
28. 28.🔍 Which is the odd one out? (a) honey (b) a glass marble (c) very salty water (d) a cork
29. 29.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) warm water (c) a magnet (d) two clear glasses
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) very salty water (b) a glass marble (c) a pebble (d) a ping-pong ball
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) turmeric powder (c) a strip of paper (d) a paper clip
34. 34.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a balloon (c) a clock or timer (d) cotton wool
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the amount of water (b) the length of the stem (c) the amount of colour (d) time for colour to show
36. 36.💧 Which of these is evaporation? (a) a pond icing over (b) a misty bathroom mirror (c) butter going runny (d) sweat drying on skin
37. 37.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the length of the blades (b) the paper clip (c) the person dropping (d) the kind of paper
38. 38.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) glucose powder (d) small pebbles

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