Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 939 · 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.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
2. 2.🔍 Which is the odd one out? (a) a crumpled paper ball (b) a stone (c) a coin (d) a paper helicopter
3. 3.🛟 Why should only a grown-up handle any hot water? (a) it changes colour (b) hot water is heavy (c) hot water can scald (d) hot water is magnetic
4. 4.🔍 How can you get the salt back from salty water? (a) keep it in a fridge (b) stir it more (c) add more water (d) let the water evaporate
5. 5.🔍 Sand is stirred into water. What do you see after a while? (a) it turns blue (b) it floats up (c) it dissolves (d) it settles at the bottom
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a plastic ruler (d) a paper towel
8. 8.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a battery cell (d) a balloon
10. 10.🧺 Which of these is needed for the water cycle bowl? (a) a battery cell (b) yeast (c) a balloon (d) a big bowl
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
12. 12.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the amount of water is the one thing we change. (a) True (b) False
13. 13.⚖️ 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 change it (b) we measure it (c) we keep it the same
14. 14.🔮 Predict: a bowl of water is left uncovered in the hot sun all day. What happens? (a) the water increases (b) some water evaporates (c) it turns to ice (d) it turns to salt
15. 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
16. 16.🥄 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) food colour (d) cooking oil
17. 17.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) a glass marble (d) a ping-pong ball
18. 18.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it turns to stone (d) it sinks faster
19. 19.🥄 Which of these dissolves in water? (a) sand (b) cooking oil (c) small pebbles (d) glucose powder
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) honey (b) warm water (c) a clock or timer (d) sugar
23. 23.🔮 Predict: you blow the balloon up only a little. What happens? (a) it flies off the string (b) it goes much farther (c) it turns into a kite (d) it goes less far
24. 24.True or false: a magnet is needed for the density tower. (a) False (b) True
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the water layer (b) under the honey (c) on top of the oil (d) in the honey layer
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a magnet
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub
30. 30.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
31. 31.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.⚖️ 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
33. 33.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
34. 34.🧺 Which of these is needed for the density tower? (a) a battery cell (b) a magnet (c) honey (d) turmeric powder
35. 35.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) warm water (c) a clock or timer (d) a balloon
36. 36.True or false: cling film is not needed for the water cycle bowl. (a) True (b) False
37. 37.🧺 Which of these is needed for the paper helicopter? (a) a ruler (b) a magnet (c) a battery cell (d) yeast
38. 38.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
39. 39.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) a sheet of glass (b) the flat sheet (c) the crumpled ball (d) neither of them
40. 40.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) a mirror (c) sugar (d) a teaspoon

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