SOL science prep 6th grade water unit Flashcards
does the amount of water in the Earth ever change?
no
______ is the most common substance on Earth.
Water
_____% of all water is in the oceans (saltwater)
97%
_____% of all water is in the frozen icecaps (freshwater).
2%
_____% of all water is located in rivers, lakes, soil, ground and atmosphere (freshwater).
1%
What is the only substance on Earth that exists naturally in solid, liquid, and gas form?
water
Water freezes at ____ degrees Fahrenheit and ____ degrees Celsius.
32, 0
Water boils at _____degrees Fahrenheit and _____degrees Celsius.
212, 200
Gas to solid
deposition (removing heat)
gas to liquid
condensation (removing heat)
liquid to solid
freezing (removing heat)
solid to gas
sublimation (add heat)
solid to liquid
melting (add heat)
liquid to gas
evaporation (add heat)
what state of mater does not change shape or volume?
solid
what state of mater has molecules that are tightly packed?
solid
what state of mater has molecules that move very slowly?
solid
what state of mater does not change volume, but does change shape?
liquid
what state of mater has molecules that are loosely packed?
liquid
what state of mater has molecules that move at a moderate pace?
liquid
what state of mater changes shape and volume?
gas
what state of mater has molecules that move freely and quickly?
gas
when a phase change takes place what 3 things increase of decrease?
thermal energy
molecular
temperature
the process by which water moves through the Earth and atmosphere?
the Water Cycle
falls in the form of rain, snow, sleet, or hail
precipitation
water running over the surface, due to gravity
runoff