Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 632 · 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: small test objects is needed for the float-or-sink test. (a) True (b) False
2. 2.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a balloon
3. 3.True or false: a pebble is less dense than water. (a) False (b) True
4. 4.🧺 Do we need a magnet for the density tower? (a) needed (b) not needed
5. 5.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
6. 6.🧺 Which of these is not needed for the water cycle bowl? (a) water (b) a magnet (c) sunlight (d) a big bowl
7. 7.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a towel for spills (d) a battery cell
8. 8.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) water with food colour (d) turmeric powder
9. 9.True or false: sugar in icy water dissolves faster. (a) False (b) True
10. 10.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it changes colour (c) it can pop loudly (d) it gets too heavy
11. 11.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a solution (d) a magnet
12. 12.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) the length of the stem (c) time for colour to show
13. 13.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
14. 14.🥄 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sand (d) baking soda
15. 15.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
17. 17.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) turmeric powder (d) a white flower
18. 18.🧺 Do we need sugar for the dissolving test? (a) not needed (b) needed
19. 19.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) True (b) False
20. 20.🛟 Which is a safe rule for the balloon rocket? (a) blow it till it bursts (b) keep it away from faces (c) put string round a neck (d) aim it at your friend
21. 21.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) from your raised hand (c) a high window ledge (d) a roof edge
22. 22.💧 Which change is this: making ice lollies? (a) melting (b) condensation (c) evaporation (d) freezing
23. 23.True or false: yeast is not needed for the balloon rocket. (a) False (b) True
24. 24.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
26. 26.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) water with food colour (d) a magnet
27. 27.🧺 Which of these is not needed for the water cycle bowl? (a) a balloon (b) water (c) cling film (d) sunlight
28. 28.💧 Which of these is freezing? (a) wet hair drying (b) drops on a cold glass (c) water becoming ice (d) sweat drying on skin
29. 29.🍯 Which of these is denser than water? (a) honey (b) an ice cube (c) cooking oil (d) a cork
30. 30.🍯 Is air denser or less dense than water? (a) denser than water (b) less dense than water
31. 31.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
32. 32.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) a battery cell (c) sunlight (d) a big bowl
33. 33.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
34. 34.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
35. 35.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
39. 39.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
40. 40.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed

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