Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 474 · 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 float-or-sink test. Which one is NOT needed? (a) a tub of water (b) turmeric powder (c) small test objects (d) a towel for spills
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) small pebbles (d) cooking oil
5. 5.⚖️ 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
6. 6.True or false: sugar in warm water dissolves slower. (a) False (b) True
7. 7.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it sinks faster (d) it turns to stone
8. 8.🛟 Which of these floats on water? (a) a coin (b) a glass marble (c) a piece of thermocol (d) a pebble
9. 9.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) a paper clip (c) a magnet (d) a strip of paper
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the density tower? (a) a magnet (b) yeast (c) cooking oil (d) turmeric powder
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the petals turn bluish (c) the water turns green (d) the flower floats away
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🌈 In VIBGYOR, what number colour is orange?
15. 15.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) evaporation (c) magnetism (d) melting
16. 16.🚀 Which of these goes backward? (a) water from the oars (b) the balloon (c) the swimmer (d) the rowing boat
17. 17.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) a magnet
19. 19.⚖️ 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 same glass (b) how much of each liquid (c) the order of pouring (d) the order of the layers
20. 20.True or false: a balloon is not needed for the water cycle bowl. (a) False (b) True
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
23. 23.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a battery cell (d) bright sunlight
24. 24.🔍 How can you get the salt back from salty water? (a) stir it more (b) keep it in a fridge (c) let the water evaporate (d) add more water
25. 25.⚖️ 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 kind of flower (b) time for colour to show (c) the length of the stem (d) the amount of colour
26. 26.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
27. 27.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) run around the tub (d) play near a deep pond
28. 28.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.🚀 Which of these goes forward? (a) water from the oars (b) air from the balloon (c) water a swimmer pushes (d) the rowing boat
30. 30.🧺 Which of these is needed for the dissolving test? (a) a comb (b) a magnet (c) warm water (d) a balloon
31. 31.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a fridge magnet (c) a sundial (d) a balloon rocket
32. 32.🧺 Which of these is needed for the density tower? (a) a mirror (b) a balloon (c) a spoon (d) a battery cell
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a ball of clay (b) a cork (c) a glass marble (d) a coin
35. 35.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a fridge magnet
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) an ice cube (c) a pebble (d) a glass marble
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) False (b) True
38. 38.🍯 Is honey denser or less dense than water? (a) less dense than water (b) denser than water
39. 39.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
40. 40.True or false: a battery cell is needed for the water rainbow. (a) False (b) True

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