Chapter 5 Vocab Flashcards
Strength of the gravitational force at the body’s surface
Surface Gravity
Speed required for any object to escape forever from the body’s gravitational pull
Escape Speed
Thick part of the interior of the earth
Mantle
Two-part section of Earth’s Interior surrounded by the mantle
Core
The surface layer of the earth
Crust
Part of Earth comprising of rivers, lakes, oceans, etc.
Hydrosphere
Area of air lying just above the surface of the earth
Atmosphere
Zone of charged particles trapped by Earth’s magnetic field
Magnetosphere
Daily fluctuation in ocean level
Tides
Difference in gravitational force stretching on the line joining Earth and the moon
Tidal Bulge
Variation of the moon or sun’s gravity across Earth
Tidal Force
Condition where the rotation period of a body is precisely equal to (or synchronized with) its orbital period around another body
Synchronous Orbit
When Earth rotates on its axis at the same rate as the moon orbits Earth, it’s rotation will become ______ with the moon’s motion.
Tidally Locked
Region around 12 km below atmosphere
Troposphere
Region above troposphere extending to an altitude of 40-50 km
Stratosphere
Region between 50-80 km from the surface
Mesosphere
Region above 80 km where the atmosphere is kept partly ionized by solar ultraviolet radiation
Ionosphere
Constant upwelling of warm air and the concurring downward flow of cooler air to take its place
Convection
The period of rising and falling air that contributes to atmospheric heating, surface winds, and weather
Convection Cells
