Density, Convection & Properties of Water

Front

What property of water causes droplets to take a spherical shape?

Back

Cohesion

Front

How do you order liquids from most dense to least dense?

Back

By comparing their densities, with the most dense liquid having the highest mass per unit volume.

Front

If a substance has a mass of 27g and a volume of 10mL, what is its density?

Back

Density = mass/volume = 27g/10mL = 2.7 g/mL.

Front

What is the term for the attraction between water molecules and other substances, such as a leaf?

Back

Adhesion

Front

How do you determine the volume of an object placed in a graduated cylinder?

Back

By measuring the difference in water level before and after the object is submerged.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume (Density = mass/volume).

Front

What is the significance of water's high specific heat?

Back

It allows water to absorb and release large amounts of heat without significant temperature changes, stabilizing climates.

Tags

NGSS.MS-PS3-4

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) due to differences in density.

Tags

NGSS.MS-ESS2-6

Front

How does temperature affect the density of water?

Back

As temperature increases, water density decreases until it reaches 4°C, after which it begins to decrease further.

Tags

NGSS.MS-PS1-4

Front

What is the role of cohesion in water's behavior?

Back

Cohesion allows water molecules to stick together, leading to surface tension.