Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 482 · 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.🛟 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
2. 2.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
3. 3.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
4. 4.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
5. 5.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
6. 6.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
7. 7.⚖️ 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) the amount of clay (c) the kind of clay (d) whether it floats
8. 8.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
10. 10.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
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 shape of the clay (b) the amount of clay (c) whether it floats (d) the tub of water
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a results table (c) a tub of water (d) a towel for spills
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a balloon (c) small test objects (d) a battery cell
14. 14.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it bounces up (d) it floats
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to win a prize (d) to hide the corks
16. 16.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
18. 18.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the tub (d) the air above
19. 19.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
22. 22.True or false: a glass marble sinks in water. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) a ball of clay (d) a ping-pong ball
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) turmeric powder
25. 25.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a feather (d) an iron nail
26. 26.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a piece of thermocol (d) a steel spoon
27. 27.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the big log (c) the small pebble (d) both of them
28. 28.🧺 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) small test objects (d) yeast
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a magnet (d) turmeric powder
30. 30.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a results table (d) turmeric powder
32. 32.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
33. 33.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) sea water is warm (d) its hollow shape
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.🔍 Which is the odd one out? (a) a ping-pong ball (b) a coin (c) a piece of thermocol (d) an ice cube
36. 36.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is less dense (d) ice is magnetic
37. 37.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
38. 38.🔍 Which is the odd one out? (a) a pebble (b) a feather (c) a cork (d) an ice cube
39. 39.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
40. 40.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False

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