Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 817 · 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.🚁 Which of these falls slowly through the air? (a) an open sheet of paper (b) a glass marble (c) a crumpled paper ball (d) a stone
2. 2.🥄 Why does sugar dissolve faster in warm water? (a) sugar likes the dark (b) cold water is wet (c) particles move faster (d) warm water is thicker
3. 3.True or false: a small cup is needed for the water cycle bowl. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) ice becoming water (b) a pond icing over (c) butter going runny (d) snow turning to water
5. 5.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
6. 6.🚁 Why does the paper helicopter fall slowly? (a) a magnet holds it (b) air pushes on its blades (c) it has no weight (d) the floor pushes it
7. 7.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) the stem turns blue (d) no colour change
8. 8.True or false: cooking oil is not needed for the density tower. (a) False (b) True
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
10. 10.🧺 Do we need a spoon for the density tower? (a) needed (b) not needed
11. 11.True or false: a tall clear glass is not needed for the density tower. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a compass needle (d) a drinking straw
13. 13.True or false: chalk powder dissolves in water. (a) True (b) False
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.💧 Which of these lets water climb up it? (a) a cotton thread (b) a steel spoon (c) a plastic ruler (d) a piece of foil
16. 16.💧 Which of these is evaporation? (a) ice becoming water (b) snow turning to water (c) water becoming ice (d) a puddle drying up
17. 17.🧺 Do we need cold water for the dissolving test? (a) needed (b) not needed
18. 18.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a battery cell (b) ice cubes (c) water (d) a big bowl
19. 19.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same tape (c) distance it travels (d) the slope of the string
20. 20.True or false: the swimmer goes forward. (a) False (b) True
21. 21.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) in the oil layer (b) on top of the oil (c) in the water layer (d) at the very bottom
22. 22.⚖️ 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 shape of the clay (d) the kind of clay
23. 23.True or false: a pebble is less dense than water. (a) True (b) False
24. 24.⚖️ 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
25. 25.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
26. 26.True or false: very salty water is denser than water. (a) False (b) True
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) turmeric powder (d) a towel for spills
28. 28.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) wipe them on walls
29. 29.💧 Which of these is evaporation? (a) water becoming ice (b) drops on a cold glass (c) wet clothes drying (d) drops under a pot lid
30. 30.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) forward (b) straight down (c) it stays still (d) backward
31. 31.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
32. 32.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
33. 33.🔍 Which is the odd one out? (a) a toy parachute (b) a feather (c) a stone (d) an open sheet of paper
34. 34.🛟 Which of these sinks in water? (a) a coin (b) an ice-cream stick (c) a dry leaf (d) an ice cube
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a magnet
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.⚖️ 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 card (b) whether the card stays (c) how full the glass is
39. 39.⚖️ 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 white paper (b) brightness of rainbow (c) the same glass (d) the time of day
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the length of the blades is the one thing we change. (a) True (b) False

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