Most fish have airbags called:
swim bladders
tubes
life jackets
lungs
If the object weighs the same as the water that has been displaced, does it float or sink?
floats
What happens to fish when their airbags are full of air? Do they float or sink?
float to the surface
Why do big, heavy ships float?
a ship's bottom is shaped in a way that displaces water
a ship has special weights in it
What is a life jacket full of?
air
rocks
weights
How does knowing why things float or sink help people?
Helps people build boats and other things that will be used in water
Do all heavy things sink?
No
Why will a boat sink if it has a hole in it?
the hole will let water come into the boat
What do people use to breathe?
lungs
What should we wear to keep safe in the water?
life jackets
What happens when water is displaced?
something has taken the place of the water
the water is lost
the water just disappears