Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 421 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
2. 2.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
3. 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) yeast
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
5. 5.⚖️ 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) True (b) False
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the kind of clay (c) the shape of the clay (d) the tub of water
7. 7.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
8. 8.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
9. 9.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is very cold (d) ice is less dense
10. 10.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
11. 11.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a cork (c) an iron nail (d) an ice cube
12. 12.True or false: a cork floats on water. (a) True (b) False
13. 13.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it dissolves (d) it turns to stone
14. 14.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
16. 16.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the tub (d) the air above
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) lots of salt stirred in (d) a few ice cubes
19. 19.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) its hollow shape (c) sea water is warm (d) steel is very light
20. 20.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
21. 21.True or false: an iron nail floats on water. (a) False (b) True
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) yeast (d) a results table
23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a results table (d) a tub of water
25. 25.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
26. 26.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a glass marble (d) an empty capped bottle
27. 27.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) turmeric powder (d) a results table
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
32. 32.True or false: a feather sinks in water. (a) False (b) True
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) whether it floats (c) the shape of the clay (d) the tub of water
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a mirror (d) small test objects
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
36. 36.True or false: a pebble floats on water. (a) False (b) True
37. 37.True or false: a glass marble floats on water. (a) False (b) True
38. 38.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) turmeric powder (d) a towel for spills
40. 40.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up

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