What is the formula for calculating density?
Density = Mass / Volume
True or False: Density is a scalar quantity.
True
Fill in the blank: The unit of density in the SI system is _____ per cubic meter.
kilogram
What is the density of water at 4 degrees Celsius?
1,000 kg/m³
Which of the following materials has the highest density? A) Aluminum B) Iron C) Wood
B) Iron
How does temperature generally affect the density of liquids?
Density decreases as temperature increases.
What happens to the density of a gas when it is compressed?
The density increases.
True or False: An object will float in water if its density is less than that of water.
True
Calculate the density of an object that has a mass of 50 kg and a volume of 2 m³.
25 kg/m³
What is the relationship between density and buoyancy?
Objects with lower density than the fluid will float, while those with higher density will sink.
Fill in the blank: The density of an object is determined by its _____ and _____.
mass, volume
Which of the following is NOT a unit of density? A) g/cm³ B) kg/m³ C) m/s²
C) m/s²
What is the principle that explains why objects float or sink in fluids?
Archimedes’ principle
True or False: Density can change with pressure.
True
What happens to the density of a solid when it is heated?
It generally decreases.
