First Semester Science 09 Study Guide

Front 1

rock cycle

Back 1

the process in which rocks form, change, and breakdown

Front 2

crystallization

Back 2

the process through which rocks form, either from molten rock or coming out of solution

Front 3

plate tectonics

Back 3

the theory that the earth's surface, (lithosphere) is divided into a series of segments which move

Front 4

atoms

Back 4

the smallest unit of an element that has the properties of that element

Front 5

ions

Back 5

atoms which have lost or gained electrons

Front 6

force

Back 6

a push or a pull

Front 7

Newton's three laws

Back 7

1. inertia
2. f=ma
3. action force/reaction force

Front 8

buoyancy

Back 8

push back force equal to the force exerted by the amount of water displaced by the object

Front 9

gravity

Back 9

the pull of an object towards the center of its mass

Front 10

topography

Back 10

surface features of an area of earth's continent

Front 11

contour lines

Back 11

connect points of equal elevation

Front 12

rules for a contour map

Back 12

1. contour lines never cross
2. circles show highest and lowest
3. hachurre lines show decreases in elevation in adepression
4. contour lines crossing a stream point to higher elevations
5. the closer the contour lines the steeper the slope
6. index lines have numbers on them
7. contour interval is always the same

Front 13

science process skills

Back 13

set of "steps" through which info. is gained and verified, including observations, hypothesis, variables, writing procedures, organized data.

Front 14

observation

Back 14

info. gained using the five senses

Front 15

hypothesis

Back 15

proposed solution to a problem to be tested; based on observations and previous expierience

Front 16

variables

Back 16

anything which can change in an expieriment

Front 17

independent variable

Back 17

the one variable which is deliberately changed from one trial to another by the expierimenter.

Front 18

dependent variable

Back 18

variable which may change in response to changes in the independent variable

Front 19

controlled (constant) variable

Back 19

those variables which must remain the same from one trial to another.

Front 20

procedure

Back 20

step by step sequence for conducting an expieriment

Front 21

data

Back 21

observations of the changes made due to the manipulation of one variable. they are usually recorded in an organized chart.

Front 22

quantitative

Back 22

observations involving measurements

Front 23

qualitative

Back 23

observations of what occurs. very descriptive.

Front 24

types of mining

Back 24

1. strip mining
2. open pit mining
3. deep mining
4. surface mining

Front 25

density

Back 25

the amount of mass in a given volume of space

Front 26

four spheres of earth

Back 26

1. atmosphere
2. hydrosphere
3. geosphere
4. biosphere

Front 27

weight

Back 27

the pull of gravity on the mass of an object