Understanding Relative Density

sugar cube

• less dense than water

• more dense than water

Which of the following statements is true about relative density?

• It has units of kg/m³

• It is a dimensionless quantity

• It is measured in liters

• It is measured in meters

Look at this image.  Which object has the LOWEST density in water? How? 

• The Ping Pong Ball because it floats to the top 

• The bolt because it has sunk to the bottom

• The soda cap because it is not just full of air like the Ping Pong ball

Look at this image.  Which object has the GREATEST amount of density in water? How? 

• The Ping Pong Ball because it floats to the top 

• The bolt because it has sunk to the bottom

• The soda cap because it is not just full of air like the Ping Pong ball

Tags

NGSS.MS-PS1-2

This object ​ ​ (a)   in water,

so we know its density is ​ (b)   .

• Sinks

• greater than 1

• Floats

• less than 1

If the relative density of a liquid is 0.8, will it float or sink in water?

• Float

• Sink

• Neither float nor sink

• It depends on the temperature

Which of the following is NOT a factor affecting relative density?

• Temperature

• Pressure

• Volume

• Mass

This object ​​ (a)   in water,

so we know its density is ​ (b)   .

• Floats

• less than 1

• Sinks

• greater than 1

Of all these layers, which is the least dense?

• The green liquid

• The blue liquid

• The red liquid

• The clear liquid

Why do ice cubes float in a  glass of water?

• the ice cubes are more dense than the water

• the water is more dense than the ice cubes

• the water is more dense than the glass

• the ice is more dense than the glass