What is a convection current? - It is a cycle of moving material (liquids or gases) that are moving due to density differences., At a mid-ocean ridge, are the rocks closest to it younger or older in age than the rocks farthest from it? - Younger - closer Older - further, What causes materials like magma and lava to rise up through the Earth? - Convection, What is the most dense layer of Earth? - The inner core, Why do earthquakes occur? - Because Earth’s plates hit into each other and release energy we call seismic energy, The San Andreas Fault is a? - Transform boundary, What Earth materials do S-waves (secondary/shear waves) travel through? - Solids only, What Earth materials do P-waves (primary/compressional waves) travel through? - Liquids and solids, Do seismic waves move faster or slower through more dense material inside of Earth? - Slower, What is the eccentricity of a straight line? - 1, What is the eccentricity of a perfect circle? - 0, Celestial objects that orbit the sun, orbit in a circular path or an elliptical path? - Elliptical, When a satellite is closest to its primary, does it move fastest or slowest in its orbit? - Fastest because it is under the influence of more gravitational attraction, Where will the less dense hydrogen gas be found in a star? - In the outer layer/outer shell, What process in a star converts hydrogen into helium? - Nuclear fusion, What force is acting in space, holding matter together and keeping us revolving around the sun? - Gravity, What elements are stars, like our sun made of? - Mostly lower density Hydrogen fusing to form more dense Helium., How do you think pollution affects humans? - Pollution has a negative effect on humans, Why have we not found life on other planets? - They are too far or close to the sun. They don’t have water or oxygen. They don’t have an atmosphere to help regulate the temperature., What characteristics does a habitable planet need? - Liquid water, an atmosphere with oxygen and the perfect distance away from the sun., Where do earthquakes, tsunamis and volcanoes frequently happen? - At plate boundaries, Where do all stars form? - In a nebula cloud, What is the relationship between color and temperature? - Blue - hot, red - cold, Why do most massive stars live shorter lives because? - They use their fuel quickly, Stars 30-40 times more massive than our sun will live a ______ life, explode as a __________ and end up as a ________ - Shorter, supernova, black hole, Stars 10- 20 times more massive than our sun will live a _____ life and will explode as a _________ and end as a ___________ - Shorter, supernova, neutron star, Stars the same size as our sun will stay in main sequence then become a _________ then a _________ - Red giant, white dwarf, Constant - as one variable increases, the other remains the same, Cyclic - as one variable increases, the other variable increases and decreases over and over, Indirect / inverse - as one variable increases, the other variable decreases, Direct - as one variable increases, the other variable increase, What was the supercontinent called? - Pangea, How does radiation decay generate heat? - By releasing energy in the form of radiation?, Where does the heat from convection currents come from? - Earths core, Where cold material sinks - When tectonic plates are pushed together, Where does hot material rise? - When tectonic plates are pushed apart, Why does hot material rise? - Because it is less dense, How fast is the mid-atlantic ridge diverging? - 2-5 centimeters per year, Name a convergent boundary - Juan De Fuca Plate, How many tectonic plates are there? - Seven, What two features form in the middle of the ocean? - Mid ocean ridges and trenches, What three features form when oceanic crust subducts underneath continental crust? - Trenches, volcanoes and earthquakes, Hawaiian islands form over what? - Hotspot, Which places would be most at risk for an earthquake, volcano, and/or tsunami? - Locations situated at or near plate boundaries, since that is where these natural hazards occur., What is the relationship between age of the rock and proximity to the mid-ocean ridge? - As distance from the ridge increases, age increases, Why do tsunamis happen? - They happen when an earthquake occurs in the ocean, Seafloor spreading? - magma rises up at the ridge and pushes the existing seafloor (older rock) to the sides), Transform - plates sliding past each other, DIvergent - plates moving away from each other, Convergent - plates moving toward each other, What is a tsunami? - A large wave that can devastate a coastal region, Why do subduction zones occur - Because the oceanic crust is more dense than the continental crust, so it sinks underneath., The deepest earthquakes are? - Subduction zones at convergent plate boundaries, Earths internal heat comes from where? - Radioactive decay, At convergent plate boundaries earthquakes are - Deep and powerful, Transform plate boundaries have - Shallow but very powerful earthquakes, At divergent plate boundaries earthquakes tend to be _____ - Weak and shallow, The magnetic field is important because? - Because it protects earth from the solar wind, In the Earths core Least dense materials are on _______ the most dense materials are on the _______ - Top, bottom, When a wave enters a new medium it changes - speed and direction, S waves are.. - blocked and absorbed, P waves are _____ by the liquid outer core - refracted / bent, Composition of Earths interior - Meteorites and lava, S waves are - Slow, secondary, perpendicular, travel only through solids, P waves are? - Fast, primary, push - pull, can travel through all materials, Earthquake waves are recorded with what device? - Seismograph, What are the two types of earthquake waves? - P and S waves, Earthquakes, volcanoes and tsunamis cause a lot of - Death and destruction, A planet wants to fly off in a straight line _________ but the gravitational attraction from the star it orbits keeps the planet pulled toward it, and forces it to orbit it. - centrifugal force, Perihelion - point closest to the Sun in the orbit, Aphelion - point farthest from the Sun in the orbit, What is Keplers third law? - The square of a planet’s orbital period is directly proportional to the cube of the semi-major axis of its orbit. Formula: Ms X T2 = R3, What is Keplers second law - Equal area in equal time (when a planet is closer to the Sun it travels faster than when it is further from the Sun), What is Kepler's first law? - Planets orbit the Sun in elliptical orbits (not perfectly circular), with the Sun at one focus. Formula eccentricity = distance b/w foci/length of major axis, As a planets distance from the sun _____ its orbital period ______ - Increases, increases, In order to have liquid water what has to be just right? - Distance from the sun, Objects that orbit closer to the Sun are in what form? - Vapor form, Objects further from the Sun are in what form? - Solid form, Stars spend the majority of their life in what sequence? - Main sequence, What force pulls the clouds of dust together to make new stars? - Gravity, What happens when the forces become unbalanced? - What happens when the forces become unbalanced?, Most massive stars live shorter lives because? - Their rate of fusion is faster, The next stage of the star life cycle after Red giant is? - White dwarf, How are elements higher than iron produced? - When a star explodes as a supernova, How are elements like oxygen, hydrogen and iron made? - Through fusion that occurs in massive stars, Through fusion that occurs in massive stars - Does not have temperatures and pressures great enough, What is the sun made up of? - Hydrogen and helium, How old is the solar system? - 4.6 billion years, What is the expected lifespan of the sun? - 10 billion years, Nuclear fusion takes two hydrogen and turns them into? - Helium, The sun is undergoing - Nuclear fusion, What can humans to to make the earth a more habitable place? - Drive more energy efficient vehicles,Use renewable energy sources, Reduce reuse and recycle!, What does the rise in sea levels cause? - Temperature, pH and salinity of the ocean,Currents of the ocean, Coral reefs and migration patterns of fish, What causes the sea levels to rise? - Global warming which melts ice., What is carbon dioxide? - A greenhouse gas, Why is Earth becoming less habitable? - The increase of carbon dioxide, Earth is how many years old? - 4.6 billion years, What were the first types of living things? - Simple, unicellular organisms, Simple, unicellular organisms - Lots of available liquid, an atmosphere and perfect distance and temperature from the sun,

Earth Space Science Midterm

Odštampaj
Ugradi

Tabela

Fleš kartice je otvoreni šablon. On ne generiše rezultate za tabelu rangiranja.

Vizuelni stil

Postavke

Promeni šablon

Vrati automatski sačuvano: ?