Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 247 · 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 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
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) a tub of water (d) turmeric powder
3. 3.True or false: water from the oars goes backward. (a) False (b) True
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.💧 Which of these is freezing? (a) a puddle drying up (b) water becoming ice (c) dew on morning grass (d) butter going runny
6. 6.🚁 What does the paper helicopter do as it falls? (a) it turns into a ball (b) it flies upward (c) it stays still in air (d) it spins round
7. 7.🥄 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the water temperature is kept the same. (a) False (b) True
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.True or false: water is needed for the water cycle bowl. (a) True (b) False
13. 13.True or false: a ping-pong ball is denser than water. (a) False (b) True
14. 14.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a paper clip (b) a battery cell (c) a strip of paper (d) a ruler
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
16. 16.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) a magnet (c) a drinking straw (d) a battery cell
17. 17.💧 Which change is this: wet clothes drying? (a) freezing (b) condensation (c) melting (d) evaporation
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same glass (c) brightness of rainbow
19. 19.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is the one thing we change? (a) the same glass (b) the order of pouring (c) the order of the layers (d) the same three liquids
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same glass (b) how full the glass is (c) the same card (d) the way we turn it
21. 21.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the stirring
23. 23.🛟 Where is a safe place to drop the helicopter from? (a) from your raised hand (b) a high window ledge (c) a wobbly chair (d) a roof edge
24. 24.🧺 Do we need a balloon for the balloon rocket? (a) not needed (b) needed
25. 25.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the length of the stem (b) the amount of water (c) time for colour to show (d) the amount of colour
26. 26.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) air (d) a ping-pong ball
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🔍 Which is the odd one out? (a) a fluff of cotton (b) a paper helicopter (c) a steel spoon (d) an open sheet of paper
29. 29.🛟 What should you do with wet floors after the experiment? (a) leave them wet (b) wipe them dry (c) pour more water (d) slide on them
30. 30.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) a white flower (d) turmeric powder
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) a paper cutter (c) safety scissors (d) sharp kitchen shears
35. 35.🧺 Which of these is not needed for the water cycle bowl? (a) a magnet (b) water (c) cling film (d) ice cubes
36. 36.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is kept the same. (a) True (b) False
37. 37.🔮 Predict: wet clothes are hung out on a sunny, windy day. How do they dry? (a) they never dry (b) slower (c) they turn to ice (d) faster
38. 38.🧺 Do we need turmeric powder for the balloon rocket? (a) not needed (b) needed
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) very salty water (b) a pebble (c) a ping-pong ball (d) honey

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