Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 82 · 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 — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) False (b) True
2. 2.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a compass needle (c) a drinking straw (d) a suction hook
3. 3.True or false: a balloon is needed for the paper helicopter. (a) True (b) False
4. 4.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) not at all (b) slower (c) faster (d) the same
5. 5.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
6. 6.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
7. 7.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.True or false: a magnet is needed for the density tower. (a) True (b) False
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.True or false: a metal key floats on water. (a) True (b) False
12. 12.True or false: air from the balloon goes forward. (a) True (b) False
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
14. 14.True or false: a paper helicopter falls slowly through the air. (a) True (b) False
15. 15.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) a balloon (c) honey (d) a spoon
16. 16.🧺 Do we need a teaspoon for the dissolving test? (a) not needed (b) needed
17. 17.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
18. 18.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
19. 19.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
20. 20.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.True or false: a spoon is needed for the density tower. (a) False (b) True
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the order of the layers (b) the same glass (c) the order of pouring (d) the same three liquids
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
24. 24.True or false: food colour dissolves in water. (a) False (b) True
25. 25.True or false: a coin is denser than water. (a) False (b) True
26. 26.🧺 Do we need a balloon for the dissolving test? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) warm water (b) a magnet (c) cold water (d) two clear glasses
28. 28.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a roof edge (d) a high window ledge
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) steel is very light (d) it has a magnet
31. 31.🧺 Do we need a balloon for the density tower? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a magnet
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a glass of water (d) a balloon
34. 34.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a drinking straw
36. 36.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a balloon (c) a mirror (d) honey
37. 37.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the paper clip is kept the same. (a) False (b) True
40. 40.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed

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