Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 25 · 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 dissolves in water? (a) sand (b) glucose powder (c) sawdust (d) small pebbles
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) a towel for spills (d) small test objects
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
4. 4.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) ice cubes (c) yeast (d) water
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the kind of clay (d) the shape of the clay
6. 6.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is kept the same. (a) False (b) True
7. 7.True or false: a big bowl is not needed for the water cycle bowl. (a) False (b) True
8. 8.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
9. 9.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
10. 10.📘 What is the push of air on a falling thing called? (a) dissolving (b) air resistance (c) floating (d) magnetism
11. 11.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) some water evaporates (c) the water increases (d) it turns to ice
12. 12.🌈 In VIBGYOR, what number colour is red?
13. 13.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🥄 Does sugar in icy water dissolve faster or slower? (a) slower (b) faster
15. 15.🧺 Do we need water for the water cycle bowl? (a) needed (b) not needed
16. 16.🛟 Who should pour the warm water in the dissolving test? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
17. 17.⚖️ 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 kept the same. (a) False (b) True
18. 18.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes less far (c) it goes much farther (d) it turns into a kite
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🚁 Dropped from a raised hand, does an open sheet of paper fall slowly or fast? (a) falls fast (b) falls slowly
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) a magnet (c) a mirror (d) turmeric powder
22. 22.🍯 Which of these is denser than water? (a) a ping-pong ball (b) cooking oil (c) honey (d) air
23. 23.🍯 Is a coin denser or less dense than water? (a) denser than water (b) less dense than water
24. 24.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a magnet (c) a long string (d) sticky tape
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) cooking oil (b) a tall clear glass (c) water with food colour (d) a balloon
27. 27.True or false: very salty water is denser than water. (a) True (b) False
28. 28.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.True or false: two chairs is not needed for the balloon rocket. (a) True (b) False
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a magnet (c) a mirror (d) a tub of water
31. 31.True or false: a coin is denser than water. (a) False (b) True
32. 32.🧺 Do we need a balloon for the dissolving test? (a) not needed (b) needed
33. 33.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the flower glows (c) the petals turn red (d) no colour change
34. 34.🧺 Do we need a big bowl for the water cycle bowl? (a) needed (b) not needed
35. 35.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) water (d) a mirror
36. 36.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
37. 37.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a magnet (c) a rainbow (d) a solution
38. 38.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is what we measure? (a) the amount of water (b) how many drops form (c) the cling film cover (d) sun or shade
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) True (b) False
40. 40.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it dissolves (d) it sinks

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