3.5-3.7 (G7)

a position defined as having zero altitude; the position of the ocean surface measured mid-way between high tide and low tide

particles hit into each other or hit another object

in the context of objects, the tip of a sharp object

type of height requirement usually measured vertically upwards from sea level

a measure of how many particles are in a particular space or volume; more particles means higher concentration

a measure of how many particles are in a particular space or volume; more particles in a space is a higher concentration than fewer particles in the same space

position defined as having zero altitude; the position of the ocean surface measured mid-way between high tide and low tide

the force exerted by the atmosphere on an area of 1 meter squared, it is approximately 100 000 N/m squared at sea level

force exerted by atmosphere on an area of 1meter squared; approximately 100 000N/meter squared at sea level

when particles hit into each other or hit into another object

distance from the top to the bottom of something, or distance from the surface down to a particular position in a liquid or gas

a type of height measurement, usually measured vertically upwards from sea level

object that holds something else.

an object that holds something else, for example, a balloon is a container for gas

the international standard unit of pressure; meaning the number of newtons of force on every square metre of area written as N/m2

in the context of pressure between solids, this is the area of contact between the two solids.

distance from the top to the bottom of something, or distance from the surface down to a particular position in a liquid or gas

the result of a force exerted on an area; the pushing effect of a force

pointed end with small area at end of the points; having the ability to cut or push into something else.