a front.
a front
a front
The space between two air masses is referred to as a front. Fronts are categorized by which kind of air mass, warm or cold, is replacing the other. +++ IT's not really a "space" between the air masses - that would be a vacuum! Rather, it's a somewhat diffuse boundary.
A strip of water between two land masses is called a strait.
When two zones meet, it is often referred to as a "boundary" or "interface." In various contexts, such as geography or ecology, this meeting point can be significant for interactions and transitions between different environments or systems. For example, in meteorology, the meeting of two air masses is called a "front."
The border between stalled air masses is called a stationary front. This boundary separates two air masses with different characteristics, such as temperature and humidity, leading to prolonged periods of unsettled weather in the region.
The boundary between a cold and warm air mass is called a front. One type of air will replace another as a front passes.
A front
The asteroids.
True
Gravitational force is a non-contact force that acts between two masses.
The force of attraction between any two masses anywhere in the universe is called gravity.