Ps 110 B Study Guide

Front 1

nebular hypothesis

Back 1

the various different parts of our solar system evolved from an enormous rotating cloud

Front 2

solar nebula

Back 2

huge rotating cloud, it's made up of microscopic dust grains and bits and pieces of long-dead stars

Front 3

planetesimals

Back 3

size of asteroids that are formed from material that collided and grew together

Front 4

protoplanets

Back 4

larger and more complex than planetesimals, they are formed from repeated collisions and accretion (coming together)

Front 5

asteroids

Back 5

made up of rocky and metallic materials in the inner planet system

Front 6

comets

Back 6

ice planetesimals formed by accretion in the region of the giant planets and beyond

Front 7

meteoroids

Back 7

small solid particles, the friction that is created between the air and the meteoroid creates the dazzling light we see that we call shooting stars

Front 8

meteorites

Back 8

the remains of meteoroids that are found on Earth

Front 9

carbonaceous chondrite

Back 9

type of meteorite, contains simple amino acids and other organic compounds that are essential for life, formed around the same time as Earth

Front 10

Earth science

Back 10

sciences that try to understand Earth and the neighbors around it

Front 11

Geology

Back 11

the study of Earth-physical geology is the study of what materials make up the Earth and what processes operate at and beneath its surface-Rocks!

Front 12

atmosphere

Back 12

life-giving gaseous envelope, cause our planet to look the way it does with weathering and erosion

Front 13

geosphere

Back 13

it lies between the atmosphere and the ocean, it's the largest of the Earth's spheres, 6400 kilometers

Front 14

core

Back 14

very dense solid

Front 15

mantle

Back 15

dense rock

Front 16

crust

Back 16

thinnest outermost layer-it's the thinnest under oceans and thickest by the continents

Front 17

lithosphere

Back 17

solid, it's found in the crust and uppermost part of the mantle

Front 18

asthenosphere

Back 18

it's under the lithosphere, it's squishy, meaning the rocks are weak and are subject to change easily with heat deep within the Earth, it's mobile

Front 19

Biosphere

Back 19

all life on Earth, some life forms have adapted to living in extreme conditions

Front 20

system

Back 20

a lot of systems or parts that interact with each other to form an even larger system

Front 21

physical environment

Back 21

encompasses water, air, soil, and rock, as well as conditions such as temperature, humidity, and sunlight

Front 22

environment

Back 22

it refers to everything that surrounds and influences an organism