Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 972 · 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 coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a glass of water (c) a few hours of waiting (d) a magnet
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a magnet (c) a glass of water (d) a stiff postcard
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) yeast (d) a battery cell
4. 4.📘 What does “dense” mean? (a) very hot (b) very thin (c) heavy for its size (d) very colourful
5. 5.🧺 Which of these is needed for the density tower? (a) a tall clear glass (b) a battery cell (c) a balloon (d) a magnet
6. 6.True or false: the rowing boat goes forward. (a) False (b) True
7. 7.🚁 Why does the paper helicopter fall slowly? (a) the floor pushes it (b) air pushes on its blades (c) a magnet holds it (d) it has no weight
8. 8.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a toy parachute (b) a stone (c) a crumpled paper ball (d) a coin
10. 10.🍯 Which of these is denser than water? (a) an ice cube (b) very salty water (c) a cork (d) cooking oil
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a ruler (b) safety scissors (c) a pencil (d) a battery cell
14. 14.True or false: a magnet is needed for the balloon rocket. (a) True (b) False
15. 15.🧺 Do we need a strip of paper for the paper helicopter? (a) not needed (b) needed
16. 16.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a steel spoon (d) a piece of chalk
17. 17.🔮 Predict: the string slopes uphill. What happens? (a) it goes backward first (b) it travels farther (c) it speeds up (d) it travels less far
18. 18.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) True (b) False
19. 19.🧺 Which of these is not needed for the water cycle bowl? (a) a small cup (b) a big bowl (c) turmeric powder (d) ice cubes
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
21. 21.🚀 Which of these goes backward? (a) the rocket (b) the rowing boat (c) the balloon (d) air from the balloon
22. 22.🌈 In VIBGYOR, what number colour is violet?
23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
24. 24.🧺 Which of these is not needed for the balloon rocket? (a) a magnet (b) a drinking straw (c) two chairs (d) sticky tape
25. 25.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is what we measure? (a) the paper clip (b) the person dropping (c) the drop height (d) time to reach the floor
26. 26.True or false: a sugar cube lets water climb up it. (a) True (b) False
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
28. 28.🧺 Do we need warm water for the dissolving test? (a) needed (b) not needed
29. 29.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Which of these is not needed for the dissolving test? (a) a magnet (b) sugar (c) warm water (d) two clear glasses
31. 31.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a long string (c) turmeric powder (d) a drinking straw
32. 32.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.🧺 Which of these is not needed for the paper helicopter? (a) safety scissors (b) a strip of paper (c) a pencil (d) turmeric powder
36. 36.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
38. 38.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
39. 39.🧺 Which of these is not needed for the density tower? (a) a spoon (b) honey (c) water with food colour (d) a balloon
40. 40.🛟 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 the Sun moves (d) so it turns blue

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