HELP PLZ! does the distance between particles of a liquid increase as the liquid in a thermometer increases?

Ineed with these last two questions: 1) what are two types of cold air masses that influence the weather in north america? name them and describe their humidity. 2) describe the motion of a cold air mass and a warm air mass and the weather you would expect at a warm front and an occluded front.

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest