Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 235 · 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 paper helicopter. Which one is NOT needed? (a) a pencil (b) a paper clip (c) turmeric powder (d) safety scissors
2. 2.🔍 Which is the odd one out? (a) a piece of thermocol (b) a coin (c) a glass marble (d) a pebble
3. 3.🚁 Which of these falls fast through the air? (a) a feather (b) an open sheet of paper (c) a toy parachute (d) a coin
4. 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) a battery cell (d) a drinking straw
5. 5.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the dissolving test? (a) honey (b) a comb (c) cotton wool (d) two clear glasses
7. 7.🚁 What does the paper helicopter do as it falls? (a) it spins round (b) it stays still in air (c) it flies upward (d) it turns into a ball
8. 8.📘 What do we call water with sugar dissolved in it? (a) a crystal (b) a rainbow (c) a magnet (d) a solution
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves
10. 10.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
11. 11.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a pencil (d) a mirror
12. 12.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
13. 13.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
14. 14.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) how many drops form (b) sun or shade (c) the cling film cover (d) the size of the bowl
16. 16.🧺 Do we need a drinking straw for the balloon rocket? (a) not needed (b) needed
17. 17.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a mirror (d) a clear glass of water
18. 18.🌈 In VIBGYOR, what number colour is green?
19. 19.💧 Which of these is condensation? (a) a misty bathroom mirror (b) sweat drying on skin (c) wet clothes drying (d) a puddle drying up
20. 20.True or false: a battery cell is not needed for the balloon rocket. (a) False (b) True
21. 21.🛟 What should you do with popped balloon pieces? (a) keep them in your mouth (b) throw them away safely (c) chew them (d) give them to a baby
22. 22.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
23. 23.🧺 Do we need a mirror for the density tower? (a) needed (b) not needed
24. 24.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is what we measure. (a) True (b) False
26. 26.🚁 Why do we clip a paper clip to the bottom of the helicopter? (a) to make it fall slower (b) to make it magnetic (c) to weigh down the bottom (d) to stop the spinning
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the drop height (b) the paper clip (c) time to reach the floor (d) the length of the blades
28. 28.True or false: a coin sinks in water. (a) False (b) True
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) time to reach the floor (b) the length of the blades (c) the kind of paper (d) the person dropping
30. 30.🧺 Do we need a mirror for the water cycle bowl? (a) not needed (b) needed
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the same glass (b) the order of the layers (c) the order of pouring
33. 33.💧 In the covered bowl, where does the water vapour come from? (a) water warmed by the Sun (b) the bowl itself (c) the cling film (d) the air outside
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) the same string (c) the same tape (d) how big we blow it
35. 35.🧺 Do we need a clock or timer for the dissolving test? (a) not needed (b) needed
36. 36.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same string (b) how big we blow it (c) distance it travels
37. 37.🥄 Does sugar in warm water dissolve faster or slower? (a) faster (b) slower
38. 38.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
39. 39.🥄 Does sugar in icy water dissolve faster or slower? (a) faster (b) slower
40. 40.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “time to dissolve”? (a) we measure it (b) we keep it the same (c) we change it

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