Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 874 · 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.⚖️ 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) False (b) True
2. 2.True or false: a fluff of cotton falls fast through the air. (a) False (b) True
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🥄 Does powdered sugar dissolve faster or slower? (a) faster (b) slower
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
6. 6.🛟 Who should trim the flower stem? (a) a grown-up (b) anyone, without looking (c) a toddler (d) a pet
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.🔮 Predict: the string slopes uphill. What happens? (a) it speeds up (b) it goes backward first (c) it travels farther (d) it travels less far
9. 9.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
10. 10.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
11. 11.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) sand (d) sawdust
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) a cork (c) an ice cube (d) a pebble
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) a small cup (b) a magnet (c) a mirror (d) a balloon
14. 14.True or false: cooking oil does not dissolve in water. (a) False (b) True
15. 15.🥄 Does a big sugar cube dissolve faster or slower? (a) faster (b) slower
16. 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) two chairs (c) a magnet (d) sticky tape
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a magnetic chess set (d) a suction hook
19. 19.🔍 Which is the odd one out? (a) a cork (b) air (c) very salty water (d) an ice cube
20. 20.True or false: the balloon goes backward. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of foil (c) a glass marble (d) a cotton thread
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a few hours of waiting (d) a white flower
23. 23.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) turmeric powder (c) a battery cell (d) food colour
24. 24.🔍 Which is the odd one out? (a) a toy parachute (b) a glass marble (c) a fluff of cotton (d) an open sheet of paper
25. 25.⚖️ 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 “how much of each liquid”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
27. 27.🎈 What is the job of the straw on the string? (a) it holds water (b) it blows air in (c) it makes it heavier (d) it guides the balloon
28. 28.🌈 How many colours do we name in a rainbow (VIBGYOR)?
29. 29.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
30. 30.True or false: honey is less dense than water. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a drinking straw (d) a bicycle pump
32. 32.⚖️ 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 order of pouring”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a mirror (c) two chairs (d) a balloon
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) the sugar cube (b) neither of them (c) both the same (d) powdered sugar
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
38. 38.🥄 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) glucose powder (d) baking soda
39. 39.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the honey layer (c) under the honey (d) in the water layer
40. 40.⚖️ 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) the amount of colour (c) the room it stands in (d) the length of the stem

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