Science Vocabulary
Terms
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- Hydrogen
- smallest and lightest of all elements
- Evaporation
- water turning into vapor
- Density
- amount of mass per unit of volume
- Salt water
- found in oceans /seas -has salt so it can't be used for drinking or agriculture
- Specific gravity
- the density of any substance compared to the density of water-water has a specific gravity of 1- when a substance has a specific gravity of less than one it will float on water- when a substance has a specific gravity greater than 1 it will sink in water (example) oil will float on water because its specific gravity is less than 1
- Calorie
- specific heat of water- the amount of heat energy necessary to raise 1 gram of water 1 degree celcious
- Fresh Water
- water that is free of salt- drinking water
- Oxygen
- element found in a water molecule(H2O)
- Solution
- the mixing of 2 substances together, where both substances retain their physical and chemical character
- Elements
- 92 naturally occuring substances that make up all things in the universe
- CALORIE
- food calorie=1000x a small calorie
- Cohesion
- the attraction of molecules to each other because of molecular charge
- latent heat of vaporization
- the amount of heat energy absorbed by water to change from water to vapor(steam)
- Polar Molecule
- positive hydrogen end, negative oxygen end
- Precipitation
- rain, snow,ect. (water falling from sky)
- pure water
- 100% h20- water that can be gotten from the process of ditillation
- latent heat
- hidden heat energy absorbed by a substance to change phases or states.
- latent heat of fusion
- the amount of heat energy absorbed by water to change from ice to water (steam)
- Molecules
- the smallest representative of a substance-water is H2O
- Runoff
- water that, through the influence of gravity
- potable water
- water that is clean enough and safe enough to drink
- Ground water
- the water that goes into the ground
- Condensation
- water coming out of the air and forming clouds or fog
- Specific heat
- the amount of energy necessary to raise one killogram of a substance 1 degree celcious
- Universal Solvent
- because more things can be dissolved in water than any other substance,water is called______________
- Surface tension
- water has great_________. The ability to stick to itself at its outer edges. this is why a bug can sit on top of a surface of a pond.
- Water cycle
- the continuous and closed system of recycling water from the ocean to the sky, land and then back to the ocean again. Condensation, precipitaion, condensation, ground water, and runoff