4.30.12 ISSUE 15: SCIENCE REVIEW
Note: Hey!!! This is Miyu, everyone !!! Well this is some sci review sheets I found.(Yes, pretty awkward, what do you expect from me, Em?) Made By Miyu
A celestial object is any object outside the earth’s atmosphere. They all move in the same direction and speed. All celestial objects appear to move through the sky east to west. The paths of these apparent motions are circular and occurs at a constant rate of 15 degrees per hour. That is call daily motion.
Aphelion: Point farthest from the sun.
Perihelion: Point closest to the sun.
All planets have elliptical orbits.
Distance from earth to moon is 240,000 miles.
Kepler’s 1st law:The force of gravitation between the sun and a planet is always pulling the planet towards the sun. The planet does not fall into the sun because of the centrifugal effect of its orbital motion. The two forces balance each other. However, when earth moves closer to the sun, its speeds increases due to the increased force of gravity.
When the earth moves away from the sun, its speed decreases due to the decreased force of gravity.
Kepler’s 2nd law: A planet will cross elliptical arcs A, B, C in equal time. (Area A= Area B= Area C) Stated another way, an imaginary line connecting the sun and the planet always sweep through equal areas during equal intervals of time. Since equal areas must be covered in equal areas during equal intervals of time. Since speed must be the fastest at perihelion and slowest at aphelion.
some notes i found: XD
wave cyclone-air pressure- Low pressure system
All weather occur in the troposphere.
Streams deposit sediments by transporting to oceans
Sediments accumulate on the ocean floor.
After many millions of yeaers, the sediments compacts/ lithify and cement, forming layers of bedrock. Disconformity occurs when uplifted bedrock and layering happens w/o folding/ Tilting of bedrock
Syncline: Upward FOld
Anticline: Downward Fold.
Submergence: Covering of Land due to rising sea level.
| High Pressure | Low Pressure |
| 1. Low moisture in Air 2. dry air 3 clear and sunny 4.low humidity 5. low temperature 6. high atmpspheric pressure 7. Wind move away from the center in clockwise directions downwards 8. cold front 9. cold air mass sinks 10. above 1013.2 mb, air pressure increase | 1. high moisture in the air 2. moist air 3. cloudly rand rainy 4. high humidity 5. high temperature 6. low atmospheric pressure 7. wind moves towards the center in counter clockwise direction upwards. hurricanes, high winds, tornadoes, dark clouds, thunder storms 8. a warm front 9. warm air pass rises 10. below 1013.2mb, air pressure decreases. |
Fronts is an air mass that has the same properties and conditions throughout the air mass. where 2 fronts collide, there is a thunderstorm.
evidence for earth’s rotation
1. photographs in spaces
2. phases of the moon, no atmosphere, craters, only see 1 side of moon
3.focault pendulum
4. coriolis effect
doppler shift:
Long waves: red color, less energy, infrared rays, low temperature, red shift, low frequency, all objects move away from earth
Short waves Blue color, more energy, ultraviolet, warmer temperature, blue shift, high frequency.all objects move towards earth.
Metamorphic rock formation
Intrusion: Heat and pressure rearrange the molecules and the rock it contacts causing the rock to change into another rock
Slate > Foliated
denser than orginal
sandstone turns into quartizites. More dense and harder
shale turns into slate, which turns into micaschist, which turns into gniess.
limestone and dolostone into marble.
coal turns into diamond.
bituminous coal > wet
anthracite coal > dry
most mountains are made of granite>Low density
basalt> high density, at the bottom of the ocean.
colloids , clay, silt, all suspend in water.
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