Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 129 · 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 still floats (b) it sinks (c) it dissolves (d) it turns white
2. 2.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) small test objects (d) a balloon
3. 3.True or false: an empty capped bottle sinks in water. (a) False (b) True
4. 4.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a coin (c) a dry leaf (d) a ping-pong ball
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
6. 6.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
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 floats higher (d) it sinks
9. 9.🔍 Which is the odd one out? (a) a dry leaf (b) a cork (c) a piece of thermocol (d) an iron nail
10. 10.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
11. 11.⚖️ 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 shape of the clay (c) whether it floats (d) the tub of water
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) turmeric powder (d) a balloon
13. 13.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
14. 14.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
15. 15.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
16. 16.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) True (b) False
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a mirror (d) small test objects
19. 19.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) both of them (d) neither of them
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a balloon
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) a coin (b) an ice-cream stick (c) a metal key (d) a pebble
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the kind of clay (c) whether it floats (d) the shape of the clay
24. 24.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
25. 25.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) ice is magnetic (d) water is sticky
26. 26.⚖️ 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
27. 27.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a results table (d) a towel for spills
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a battery cell
30. 30.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
31. 31.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it dissolves (d) it floats
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a magnet (d) a results table
34. 34.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
35. 35.True or false: an iron nail floats on water. (a) False (b) True
36. 36.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a results table (c) a battery cell (d) a balloon
37. 37.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
38. 38.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
39. 39.🛟 Which of these sinks in water? (a) a steel spoon (b) a cork (c) a ping-pong ball (d) an ice-cream stick
40. 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) yeast (d) a results table

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