Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 3 · 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.🍯 Which of these is denser than water? (a) a cork (b) an ice cube (c) air (d) honey
2. 2.🚀 In “push back, move forward”, which way does the rocket go? (a) goes forward (b) goes backward
3. 3.🧺 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 balloon (d) food colour
4. 4.True or false: a glass marble is denser than water. (a) True (b) False
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the kind of clay
6. 6.💧 Which of these does not let water climb? (a) a piece of chalk (b) a plastic ruler (c) a cotton thread (d) a paper towel
7. 7.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the same glass is kept the same. (a) True (b) False
8. 8.🧺 Which of these is not needed for the density tower? (a) a spoon (b) water with food colour (c) a tall clear glass (d) yeast
9. 9.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) both of them (d) the big log
10. 10.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) time to reach the floor (b) the length of the blades (c) the paper clip
11. 11.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) a pet (d) anyone, without looking
12. 12.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
13. 13.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a balloon (b) sunlight (c) water (d) a big bowl
14. 14.🧺 Do we need a pencil for the paper helicopter? (a) not needed (b) needed
15. 15.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
16. 16.True or false: honey is needed for the density tower. (a) True (b) False
17. 17.True or false: a suction hook works by air pressure. (a) True (b) False
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
19. 19.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub
20. 20.🔍 Which is the odd one out? (a) a pebble (b) very salty water (c) a coin (d) a cork
21. 21.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.True or false: a strip of cloth lets water climb up it. (a) True (b) False
23. 23.🛟 Which rule keeps the density tower experiment safe? (a) taste each layer (b) do not lick the spoon (c) throw the glass (d) pour it on the floor
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
25. 25.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a feather (b) a coin (c) a paper helicopter (d) an open sheet of paper
27. 27.🧺 Do we need a battery cell for the paper helicopter? (a) needed (b) not needed
28. 28.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) yeast
30. 30.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes backward (b) goes forward
31. 31.📘 What pulls the paper helicopter down to the floor? (a) air pressure (b) gravity (c) the wind (d) magnetism
32. 32.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) False (b) True
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
34. 34.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) safety scissors (b) yeast (c) a pencil (d) a strip of paper
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sheet of white paper (d) a balloon
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a battery cell
37. 37.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) wipe them dry (c) pour more water (d) leave them wet
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the drop height”? (a) we change it (b) we measure it (c) we keep it the same

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