Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 736 · 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.🧺 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 magnet (d) a white flower
2. 2.🧺 Do we need a comb for the dissolving test? (a) needed (b) not needed
3. 3.🔮 Predict: you keep adding sugar to a small glass of water and stirring. What happens in the end? (a) the water turns solid (b) all of it dissolves (c) the sugar turns to salt (d) some stays undissolved
4. 4.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) a strip of paper (c) a battery cell (d) a paper clip
5. 5.⚖️ 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 kept the same. (a) False (b) True
6. 6.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) leave them wet (c) pour more water (d) wipe them dry
7. 7.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) chalk powder (d) food colour
8. 8.🔮 Predict: you add two more paper clips. How does it fall? (a) it floats up (b) slower (c) it stops in the air (d) faster
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a plastic ruler (c) a glass marble (d) a strip of cloth
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🧺 Which of these is needed for the density tower? (a) a mirror (b) cooking oil (c) yeast (d) turmeric powder
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the time we wait is kept the same. (a) False (b) True
16. 16.🧺 Do we need a magnet for the dissolving test? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) a magnet (c) a small cup (d) cling film
18. 18.📘 What pulls the paper helicopter down to the floor? (a) magnetism (b) air pressure (c) gravity (d) the wind
19. 19.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) two chairs (d) a battery cell
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) melting (d) capillary action
22. 22.🛟 Which of these floats on water? (a) an ice-cream stick (b) a coin (c) a pebble (d) a metal key
23. 23.True or false: a dry leaf floats on water. (a) True (b) False
24. 24.True or false: a cork is denser than water. (a) True (b) False
25. 25.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) the same (b) faster (c) slower (d) not at all
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a feather (c) a crumpled paper ball (d) a glass marble
27. 27.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is what we measure. (a) False (b) True
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a mirror (d) a glass of water
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
33. 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a drinking straw (c) a magnet (d) sticky tape
34. 34.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
35. 35.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
36. 36.True or false: a mirror is not needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Which of these is needed for the density tower? (a) a balloon (b) a mirror (c) honey (d) turmeric powder
38. 38.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
39. 39.🍯 Is a pebble denser or less dense than water? (a) less dense than water (b) denser than water
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we change it (b) we keep it the same (c) we measure it

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