17.1 17.2 17.3 test Flashcards
(28 cards)
Alpha decay
positively charged particle. Its produces radioactive nuclei that consists of 2 protons and 2 neutrons
ionize
remove electrons
convergent
dive beneath
divergent
2 plates move apart
transform
horizontally (slide past)
what changes as you travel through earths layers?
temperature and pressure
2 types of crust
oceanic
continental
mantle 3 parts
lithosphere: solis
mesosphere: solid
asthenosphere: semi solid
outer core
liquid
temps are too high enough to melt metals
inner core
solid
pressure high so its solid
how does a convection current happen?
material in the mantle near the outer core heats up, causing density to decrease. The less density martial rises. Mantel material near crust is cooler which makes it more dense and sink it the the asthenosphere.
law conservation of matter
states that for any system closed to all transfers of matter and energy the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed.
fission
splitting an atom into 2 new ones
magma
molten rock within the earth
fault
a crack in the earth created when rocks on either side of a break move
seismic waves
primary waves
secondary waves
surface waves
p waves
travel through liquid, solid(rock), air
compression waves
s waves
starts at focus point
slower
up and down motion
travels through solid
surface wave
moves across surface
long wave lengths
starts at fp
vertically and left to right
richter scale
scale that expresses the relative magnitude of an earthquake
volcanoes
sheild
composite
cinder
sheild volcanoes
largest vol.
build up of lava producing a sloping mountain
composite volcanoes
made up of alternation layers of ash, cinder, lava,
cinder volcanoes
smallest
large amount of gas trapped in magma
particles fall to the ground around the vent forming a cone
