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100
The ability for an object to float is called...
buoyancy
100
The force that pushes down on an object is called...
Gravity
100
You can make a sinking object float by changing its...
Shape
100
You can add ______ to water to make a sinking object float.
Salt
200
What are 2 factors that do NOT affect buoyancy?
Weight and Size
200
When you add salt to water it increases __________
The water's density
200
Do all liquids have the same density?
No
200
What does density mean?
How close the molecules in an object are packed together.
300
If something is more dense than water it will ___________
Sink
300
If something is less dense than water it will _____________
Float
300
Density cubes are the same shape and size; why do some of them sink and some of them float?
Because their densities are different
300
A big marble sinks; if you made the marble smaller would it float? Why?
No - the density does not change and the size does not matter.
400
Why does a ball of clay sink, but clay shaped like a boat will float?
Changing the shape of something can sometimes make it float.
400
Name 3 things that sink in water
Answers will vary
400
Name 3 things that float in water.
Answers will vary
400
The most important factor affecting buoyancy is ___________
Density
500
What is it called when you put something into water and the water level rises?
Displacement
500
If something does not float and it does not sink, it is known as __________
neutrally buoyant
500
What is buoyancy?
The force that pushes things up in water
500
Why do apples float?
There are air pockets inside the apple, and apples have a lot of water in them that makes their density similar to water.