Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 75 · 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.True or false: honey is needed for the dissolving test. (a) True (b) False
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a sink or a bucket
3. 3.🔮 What would change if the flower stood in plain water? (a) no colour change (b) the stem turns blue (c) the flower glows (d) the petals turn red
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
5. 5.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
6. 6.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is kept the same. (a) False (b) True
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a balloon (d) a towel for spills
8. 8.⚖️ 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 the one thing we change. (a) False (b) True
9. 9.📘 What is water vapour? (a) salty water (b) tiny ice cubes (c) water as a gas (d) a kind of smoke
10. 10.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) a little shaking (d) more plain water
11. 11.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
12. 12.🔍 What do you see after pouring honey, water and oil into one glass? (a) the glass gets hot (b) one mixed colour (c) bubbles of gas (d) three separate layers
13. 13.True or false: sunlight is needed for the water cycle bowl. (a) True (b) False
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the kind of clay (d) the amount of clay
15. 15.🧺 Which of these is not needed for the dissolving test? (a) cold water (b) warm water (c) a clock or timer (d) cotton wool
16. 16.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) a pebble (d) honey
17. 17.True or false: a suction hook works by magnetism. (a) False (b) True
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) a battery cell (d) yeast
19. 19.🚁 Which of these falls slowly through the air? (a) a fluff of cotton (b) a crumpled paper ball (c) a coin (d) a stone
20. 20.True or false: small pebbles does not dissolve in water. (a) True (b) False
21. 21.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) honey (d) a battery cell
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a balloon
23. 23.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a results table (d) a mirror
25. 25.🚀 Which of these goes backward? (a) the rocket (b) the balloon (c) water from the oars (d) the swimmer
26. 26.⚖️ 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 glass is what we measure. (a) False (b) True
27. 27.True or false: a ruler is needed for the paper helicopter. (a) True (b) False
28. 28.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a battery cell (d) a mirror
29. 29.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) a ruler (c) yeast (d) a strip of paper
30. 30.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) a ruler (c) a paper clip (d) turmeric powder
31. 31.True or false: a ping-pong ball is less dense than water. (a) False (b) True
32. 32.🛟 Why should only a grown-up handle any hot water? (a) hot water is heavy (b) it changes colour (c) hot water can scald (d) hot water is magnetic
33. 33.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
34. 34.True or false: air from the balloon goes forward. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a cork (b) very salty water (c) a glass marble (d) a pebble
36. 36.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
37. 37.🍯 Which of these is denser than water? (a) a cork (b) a glass marble (c) a ping-pong ball (d) an ice cube
38. 38.🧺 Which of these is needed for the dissolving test? (a) a mirror (b) a comb (c) two clear glasses (d) honey
39. 39.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) whether the card stays (c) how full the glass is

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