Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 919 · 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.True or false: a cork sinks in water. (a) True (b) False
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
3. 3.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
4. 4.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
5. 5.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is very cold (d) ice is less dense
6. 6.🔮 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
7. 7.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
8. 8.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) run around the tub (d) play near a deep pond
9. 9.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
10. 10.⚖️ 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 kind of clay (b) the shape of the clay (c) whether it floats (d) the tub of water
11. 11.🧺 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) turmeric powder (d) a results table
12. 12.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
13. 13.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
14. 14.🧺 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) a mirror
15. 15.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it sinks faster (d) it turns to stone
16. 16.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) a pebble (b) a feather (c) a piece of thermocol (d) an ice cube
18. 18.True or false: a ping-pong ball sinks in water. (a) False (b) True
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) a battery cell
20. 20.🔍 Which is the odd one out? (a) a coin (b) a cork (c) an iron nail (d) a metal key
21. 21.⚖️ 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
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) a ball of clay (d) an ice cube
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
26. 26.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
27. 27.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) False (b) True
29. 29.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
30. 30.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
31. 31.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
32. 32.True or false: a glass marble floats on water. (a) False (b) True
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a mirror (c) a balloon (d) yeast
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a balloon (d) small test objects
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
36. 36.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
37. 37.🧺 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 results table (d) yeast
38. 38.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
39. 39.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the cork itself (d) the water
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a results table (c) small test objects (d) a towel for spills

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