Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 356 · 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 density tower. Which one is NOT needed? (a) a tall clear glass (b) honey (c) a battery cell (d) cooking oil
2. 2.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a piece of foil (c) a piece of chalk (d) a glass marble
3. 3.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is what we measure. (a) True (b) False
4. 4.True or false: turmeric powder is not needed for the water cycle bowl. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) drops under a pot lid (b) snow turning to water (c) butter going runny (d) ice becoming water
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a white flower (c) turmeric powder (d) a battery cell
7. 7.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
8. 8.💧 Which change is this: sweat drying on skin? (a) evaporation (b) freezing (c) melting (d) condensation
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
10. 10.🔍 Which is the odd one out? (a) a glass marble (b) a cork (c) a coin (d) a metal key
11. 11.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it dissolves (d) it still floats
12. 12.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a glass marble (c) a toy parachute (d) a stone
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) False (b) True
14. 14.⚖️ 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) False (b) True
15. 15.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
16. 16.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
17. 17.💧 Which of these is evaporation? (a) snow turning to water (b) a pond icing over (c) drops on a cold glass (d) wet clothes drying
18. 18.True or false: baking soda dissolves in water. (a) False (b) True
19. 19.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
20. 20.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) honey (c) two clear glasses (d) a clock or timer
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a tub of water (d) small test objects
24. 24.True or false: drops on a cold glass is melting. (a) True (b) False
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
26. 26.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
28. 28.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) it turns to salt (b) it turns to ice (c) some water evaporates (d) the water increases
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
30. 30.🍯 Which of these is less dense than water? (a) a glass marble (b) a cork (c) a pebble (d) very salty water
31. 31.🔍 Which is the odd one out? (a) a toy parachute (b) a stone (c) a feather (d) a fluff of cotton
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the flower floats away (d) the petals turn bluish
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same window (c) the amount of water (d) the same glass
34. 34.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the size of the bowl”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) spilled oil is slippery (c) oil makes it rain (d) oil attracts magnets
36. 36.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
37. 37.💧 Which of these does not let water climb? (a) a strip of cloth (b) a rubber eraser (c) a cotton thread (d) a paper towel
38. 38.⚖️ 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 change it (c) we measure it
39. 39.⚖️ 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 time we wait (b) sun or shade (c) how many drops form
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed

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