Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 133 · 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: sweat drying on skin is evaporation. (a) False (b) True
2. 2.True or false: turmeric powder is needed for the coloured flower experiment. (a) False (b) True
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a cork (b) honey (c) a pebble (d) very salty water
6. 6.🔍 What do you see after pouring honey, water and oil into one glass? (a) one mixed colour (b) three separate layers (c) the glass gets hot (d) bubbles of gas
7. 7.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes forward (b) goes backward
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
9. 9.🧺 Which of these is not needed for the dissolving test? (a) a balloon (b) sugar (c) a clock or timer (d) two clear glasses
10. 10.🧺 Which of these is not needed for the density tower? (a) water with food colour (b) a battery cell (c) cooking oil (d) honey
11. 11.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) False (b) True
12. 12.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) cling film (c) a magnet (d) sunlight
13. 13.🚀 Which of these goes forward? (a) the balloon (b) water from the oars (c) water a swimmer pushes (d) air from the balloon
14. 14.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
16. 16.🧺 Do we need a magnet for the density tower? (a) not needed (b) needed
17. 17.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
18. 18.True or false: a balloon is needed for the water rainbow. (a) False (b) True
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
20. 20.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the water (d) the cork itself
21. 21.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a bicycle pump (d) a suction hook
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) a battery cell
23. 23.🍯 Which of these is denser than water? (a) a pebble (b) a cork (c) air (d) cooking oil
24. 24.⚖️ 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) the size of the bowl (b) how many drops form (c) sun or shade
25. 25.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a pencil (b) yeast (c) a paper clip (d) a ruler
26. 26.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.True or false: a battery cell is needed for the balloon rocket. (a) True (b) False
29. 29.🧺 Which of these is not needed for the paper helicopter? (a) a strip of paper (b) a paper clip (c) safety scissors (d) a magnet
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) its hollow shape (c) sea water is warm (d) it has a magnet
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
32. 32.🥄 Does sugar left unstirred dissolve faster or slower? (a) faster (b) slower
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the amount of water (c) the length of the stem (d) the amount of colour
34. 34.🔍 Which is the odd one out? (a) a ping-pong ball (b) very salty water (c) a pebble (d) a glass marble
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) the same glass (b) the same card (c) the way we turn it (d) whether the card stays
36. 36.🧺 Do we need warm water for the dissolving test? (a) not needed (b) needed
37. 37.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) False (b) True
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the same window (c) the same white paper (d) brightness of rainbow
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) whether it floats (c) the tub of water (d) the kind of clay
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) a magnet (d) a balloon

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