Crescent moon: when the moon is seen less than half illuminated by the sun
Gibbous moon: means when the moon is more than half full, but not quite fully illuminated
Waning: Means to decrease in strength or intensity.
Waxing:any time after new moon and before full moon, so called because its illuminated area is increasing.
When a moon is loosing its light its waning when its increasing its waxing.
Lunar cycle: one lunar cycle is 29 days
Earths Seasons/ #Eclipses
Nicolai Copernicus was an astronomer that proposed an idea that the sun was the center of the solar system.
We have seasons because, the earth spins on its axis and tilts and gives us different angles of the suns rays and give rise to the seasons of winter, spring, summer and fall.
It isn't warmer because you could be on the northern hemisphere and be turned away from the suns rays.
We have day and night because the earth spins in its axis and orbits the earth.When we are facing away from the sun we are in night when we are facing towards the sun we are in daytime.
Equinox:an equinox occurs about twice a year and means when day and night are of approximately equal duration
Solstice: Happens twice a year when the sun reaches its highest or lowest excursion relative to the celestial equator on the celestial sphere.
Plate Tectonics #platetectonics
Alphred Wegener was a German polar researcher, geophysicist and meteorologist. He also invented the idea of continental drift.
Convergent boundary: Coming closer together
Divergent boundary: Moving away from each other
Transform boundary: Sliding past each other
The small plate off the coast of Washington is called the Juan de Fuca
Convection currents transfer heat from one place to another by mass motion of fluid. convection currents move heat from the interior of the earth to the crust.
Rift Zone:when plates diverge away from each other and create extensive systems of fractures and faults.
Subduction Zone: A zone where two plates collide.
The Scablands were formed when the three giant rivers raced across the lava field that was there, deep canyons were formed in the basalt.
Rocks and Roles #rocksandroles
Sedimentary rock: this type of rock is formed from deposition of material at the earth's surface and within bodies of water. ex: Breccia and Conglomerate rock
Metamorphic rock: These type of rocks break of of original rocks through metemorphasis. ex: Gneiss rock
Igneous rocks: these rocks are formed from cooled lava and molten liquid. ex: Granite rock.
Stratification: Refers to the way sediment layers are stacked over each other
Huge blocks of horizontal sedimentary layers can be tipped or older rock layers to be on top of younger rock layers maybe because of the wind are of strong waves that beat the younger rocks down and the older rocks are now a on top.
Cell:The smallest structural and functional unit of an organism, typically microscopic.
The differance between animal cells and plant cells are that plant cells have chloroplasts and animal cells dont.
The muscle cells provide movement and heat generation to the organs of the body.
The nerve cells transmit electrical signals from the cell body.
There are two types of bone cells: osteoblasts that form bone, osteocytes that help maintain bone, and lining cells that cover the surface of the bone.
The digestive system converts food into energy and basic nutrients to feed the entire body.
The heart, blood, and blood vessels make up the cardiovascular component of the circulatory system.
The respitory uses the process of respiration in an organism.
Paramecium: This has a food vacuole like an animal cell it doesn't have a chloroplast like a plant cell.