Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 767 · 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 sugar dissolve faster in warm water or in cold water? True or false: the amount of water is what we measure. (a) False (b) True
2. 2.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the kind of clay
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a tub of water (d) yeast
5. 5.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the person dropping (b) the kind of paper (c) the paper clip (d) the length of the blades
6. 6.🔮 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 turn two colours (c) they stay white (d) they fall off at once
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a tall clear glass (c) honey (d) a battery cell
8. 8.🥄 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.⚖️ 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) how many drops form (b) the amount of water (c) the size of the bowl (d) sun or shade
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
13. 13.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a clear glass of water (d) yeast
14. 14.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
15. 15.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they become solid (c) they mix for ever (d) they turn to honey
16. 16.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the flower floats away (c) the stem turns to ice (d) the petals turn bluish
17. 17.🥄 Does sugar in warm water dissolve faster or slower? (a) slower (b) faster
18. 18.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) the stirring (b) the water temperature (c) time to dissolve (d) the kind of sugar
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) honey (c) cooking oil (d) yeast
20. 20.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
21. 21.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
22. 22.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
23. 23.💧 Which change is this: wet hair drying? (a) melting (b) freezing (c) evaporation (d) condensation
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a results table (d) small test objects
25. 25.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a balloon (c) sticky tape (d) a drinking straw
26. 26.📘 What is water vapour? (a) salty water (b) tiny ice cubes (c) a kind of smoke (d) water as a gas
27. 27.⚖️ 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) how many drops form (b) the amount of water (c) sun or shade
28. 28.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) the amount of water (c) time to dissolve
29. 29.🧺 Which of these is not needed for the water cycle bowl? (a) a big bowl (b) water (c) yeast (d) cling film
30. 30.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it sinks (d) it floats
31. 31.🌈 How many colours do we name in a rainbow (VIBGYOR)?
32. 32.🍯 Which of these is less dense than water? (a) a pebble (b) a cork (c) a glass marble (d) honey
33. 33.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
36. 36.🍯 Which of these is denser than water? (a) a ping-pong ball (b) a pebble (c) cooking oil (d) a cork
37. 37.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the amount of sugar (c) the kind of sugar (d) the water temperature
38. 38.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) the crumpled ball (b) neither of them (c) a sheet of glass (d) the flat sheet
39. 39.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) a big sugar cube
40. 40.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize

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