Exam 1

Question 1

How was the moon created

Answer 1

Splashed off earth as giant impact

Question 2

maria

Answer 2

large balsaltic plains on moon

Question 3

minerals

Answer 3

solid chemical compounds

Question 4

rocks

Answer 4

mix of minerals

Question 5

mafic rocks

Answer 5

more magnesium and iron, denser, more viscous, brighter

Question 6

sialic rocks

Answer 6

lighter, more viscous, brighter

Question 7

differentiation

Answer 7

denser rocs sink to core, lighter rocks rise to surface

Question 8

igneous rocks

Answer 8

from molten rock

Question 9

metamorphic rocks

Answer 9

reworked from heat and pressure

Question 10

sedimentary rocks

Answer 10

transported by water, rain, wind

Question 11

breccias

Answer 11

fused broken rocks

Question 12

Parts of the earth

Answer 12

crust, mantle core

Question 13

heat sources of earth

Answer 13

accretion, differentiation, radioactivity, tides

Question 14

isostatic compensation

Answer 14

planet floats on mantle at an elevation which depends on its thickness and density. (mountains are less dense an have roots)

Question 15

tectonics

Answer 15

movements in the planet’s crust

Question 16

what does extension in tectonics create?

Answer 16

normal faults

Question 17

what does compression in tectonics create?

Answer 17

reverse or thrust faults

Question 18

what does shearing in tectonics create?

Answer 18

strike slip

Question 19

evidence for plate tectonics

Answer 19

magnetic stripes, continents fit, ring of fire, marginal mountains, ocean trenches, mid-ocean ridges, seafloor spreading

Question 20

volcansim

Answer 20

erruption of molten rock

Question 21

how do impact craters form

Answer 21

instantaneous release of impactors kinetic energy due to the speed of the impact

Question 22

Stages of craters

Answer 22

1. detonation
2. excavation/ejection
3. rebound
4. collapse
5. relaxation

Question 23

keplers 3 laws

Answer 23

1. all planets move in elliptical orbits around the sun
2. orbit sweeps out area at a constant rate
3. harmonic law p^2 = a^3

Question 24

trojans

Answer 24

stable triangular lagrange points

Question 25

what does temp of a planet represent?

Answer 25

average motion of the molecules

Question 26

3 ways to transport energy

Answer 26

conduction, convection, radiation

Question 27

inertia of a sphere

Answer 27

2/5MR^2

Question 28

mean angular frequency

Answer 28

n=2pi/P

Question 29

resonances

Answer 29

where the mean motion of one object is the ratio of small integers to another, allowing small forces to build over time

Question 30

libration

Answer 30

wiggle around an equilibrium point

Question 31

Why is pluto not a planet

Answer 31

1. orbit is eccentric an inclined 2. small size (2/3 or the moon) 3. composition of rock and ice

Question 32

KBO

Answer 32

Kuiper Belt Object (pluto is the second biggest)

Question 33

inner planets

Answer 33

earth/terestrial - solid - (Detritus = rocky -> astroids)

Question 34

outer planets

Answer 34

jupiter, jorian - gas - icy (Detritus = comets kuiper belt objects)

Question 35

Def of planet

Answer 35

orbits the sun, spherical, has cleared the neighborhood around it, orbit

Question 36

test

Answer 36

test