Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 195 · 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 — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
2. 2.💧 In the covered bowl, where does the water vapour come from? (a) the bowl itself (b) the air outside (c) water warmed by the Sun (d) the cling film
3. 3.🛟 Who should pour the warm water in the dissolving test? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
6. 6.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) cling film (c) a balloon (d) ice cubes
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) small test objects (c) a tub of water (d) a towel for spills
8. 8.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) in the oil layer (d) at the very bottom
9. 9.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
11. 11.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) water a swimmer pushes (d) the rocket
12. 12.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is the one thing we change? (a) time to dissolve (b) the water temperature (c) the amount of sugar (d) the amount of water
13. 13.🧺 Which of these is not needed for the paper helicopter? (a) a paper clip (b) turmeric powder (c) safety scissors (d) a strip of paper
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.True or false: the rocket goes forward. (a) True (b) False
16. 16.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
17. 17.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a glass of water (d) a sink or a bucket
19. 19.True or false: safety scissors is not needed for the paper helicopter. (a) True (b) False
20. 20.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
23. 23.🚁 Dropped from a raised hand, does a feather fall slowly or fast? (a) falls slowly (b) falls fast
24. 24.True or false: a piece of chalk lets water climb up it. (a) True (b) False
25. 25.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
27. 27.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
29. 29.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
30. 30.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
31. 31.🧺 Which of these is not needed for the density tower? (a) cooking oil (b) a tall clear glass (c) honey (d) turmeric powder
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.True or false: a compass needle works by air pressure. (a) True (b) False
34. 34.🧺 Do we need a spoon for the density tower? (a) not needed (b) needed
35. 35.🚀 Which of these goes backward? (a) air from the balloon (b) the swimmer (c) the rocket (d) the rowing boat
36. 36.True or false: vinegar is needed for the balloon rocket. (a) True (b) False
37. 37.🧺 Do we need a ruler for the paper helicopter? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) an open sheet of paper (b) a feather (c) a toy parachute (d) a stone
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) slower (b) they never dry (c) they turn to ice (d) faster

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