6th grade science final exam40 cards

Tagged as: nursing, algebra, math, earth, history, astronomy

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1

Caldera

Large, circular shaped opening formed with the top of a volcano collapses

2

Sill

An igneous rock feature formed when magma is squeezed into a horizontal crack between two layers of rock and hardens underground

3

Dike

igneous rock feature formed when magma is squeezed into a vertical crack that cuts across rock layers and hardens underground

4

Composite Volcano

volcano built by alternating explosive and quiet eruptions that produce layers of tephra and lava; mostly where earths plates come together and one plate sinks below the other

5

Cinder Cone Volcano

Steep-sided, loosely packed volcano formed when tephra falls to the ground

6

Shield Volcano

Broad, gently sloping volcano formed by quiet eruptions of basaltic lava

7

Runoff

Any rainwater that does not sink into the ground or evaporate, but flows over earths surface; generally flows into streams and has the ability to erode and carry sediments

8

Meander

Broad C-shaped curve in a river or stream, formed by erosion of its outer bank

9

Groundwater

Water that soaks into the ground and collects in pores and empty spaces; an important source of drinking water

10

Permeable

Describes soil and rock with connecting pores through which water can flow

11

Impermeable

Describes materials that water cannot pass through

12

Fossil

Remains, imprints, or traces of prehistoric organisms what can tell when and where organisms once lived and how they lived

13

Relative Age

The age of something compared with other things

14

Absolute Age

The age, in years, of a rock or other objects; can be determined by using properties of the atoms that can make up maerials

15

Trilobite

An organism with a three-lobed exoskeleton that was abundant in Paleozoic oceans and is considered to be an index fossil

16

Eon

The longest subdivision in the geologic time scale that is based on the abundance of certain types of fossils and is subdivided into eras, periods, and epochs.

17

Era

The second long-subdivision in the geologic time scale; it is subdivided into periods and is based on major worldwide changes in types of fossils

18

Period

The third longest division of geologic time scale; it is subdivided into epochs and is characterized by the types of life that existed worldwide

19

Pangaea

A supercontinent formed at the end of the Paleozoic era when sea level dropped and continents came together to form one giant land-mass

20

Atmosphere

Earths air, which is made up of a thin layer of gases, solids, and liquids; forms a protective layer around the planet and is divided into five distinct layers

21

Ozone Layer

The layer of the stratosphere with a high concentration of ozone; it absorbs most of the sun's harmful ultraviolet radiotion

22

Ultraviolet radiation

A type of energy that comes to Earth from the sun. It can damage skin and cause cancer. It is mostly absorbed by the ozone layer

23

Convection

the transfer of thermal energy by the moving of molecules from one place to another in a liquid or gas; the type of transfer of thermal energy that produces weather.

24

Conduction

the transfer of kinetic energy from a faster moving molecule to a slower moving molecule that isn't moving place to place but is moving in place.

25

Radiation

the energy that is transferred by waves or rays in all directions from its source.

26

Condensation

The process in which water vapor changes into a liquid

27

Jet Stream

The narrow belt of strong winds that blows near the top of the troposphere

28

Humidity

The amount of water vapor held in the air

29

Relative humidity

The measure if the amount of moisture held in the air compared with the amount it can hold in at a given temperature; it can range from 0 % to 100%

30

Air Mass

A large body of air that has the same characteristics of temperature and moisture content as part of Earth's surface over which it formed

31

Front

The boundary between two air masses with different temperatures, density or moistures; can be cold, warm, occluded and stationary

32

Rotation

The spinning of the Earth on it's imaginary axis, which takes about 24 hours to complete, and causes day and night to occur

33

Revolution

The earth's year-long elliptical orbit around the sun

34

Waxing

Describes the phases that occur following a new moon, as more of the moons lighted side becomes visible

35

Waning

Describes the phases that occur after a full moon, as the visible lighted side of the moon grows smaller

36

Solar Eclipse

Occurs when the moon passes directly between the sun and earth and casts a shadow over part of the earth

37

Lunar Eclipse

Occurs when the earth's shadow falls on the moon

38

Full moon

The phase that occurs when all of the moon's surface facing the earth reflects light

39

New moon

The moon phase that occurs when the moon is between the Earth and the sun at which point the moon cannot be seen because it's lighted half is facing the sun and its dark side faces the earth

40

Axis

The imaginary vertical line that cuts through the center of the earth and around which the earth spins.