science30 cards

Tagged as: earth, physics, geology, geography, travel, nursing

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1

energy

the ability to do work or to cause change -Heat is a form of energy

2

heat transfer

is the movement of the of energy from a warmer object to a cooler one. 3 types : radiation conduction convection

3

Radiation

the transfer through empty space

4

conduction

the transfer of energy by direct contact of particles of matter

5

convection current

flow that transfers heat within a fluid

6

convection current

is set in motion by the combination of the heating and cooling of fluid, changes in the fluid's density , and the force of gravity. This energy transfer is the force that has changed our Earth's surface over a billion of years.

7

pangea

was wegners hypothesis that all the continents had once been joined together in a single landmass and have since drifted a part. Wegner used three pieces of evidence to support his theory: evidence from landforms, fossils and the climate

8

geologist

scientists who study the forces that make shape the planet

9

rock

the material that forms the earths hard surface

10

geology

the study of the planet

11

constructive forces

shape the surface by building up mountains

12

Destructive forces

are those that slowly wear away mountains and eventually every other feature on the surface

13

Coninent

are seven great landmasses that are surrounded by water

14

seismic wave

a vibration that travel through Earth carrying the energy released during an earthquake

15

pressure

the force pushing on a surface or area

16

crust

the layer of rock that forms earths outer skin

17

Basalt

a dark dense rock with fine texture

18

Granite

a rock that has larger crystals than basalt and is not as dense

19

mantle

solid material,hot rock , and is below the crust

20

lithosphere

uppermost part of the mantle and the crust together form a rigid layer

21

asthenosphere

is a soft layer, layer can flow slowly. The convection currents are in this layer and provide movement for the plates

22

outer core

a layer of molten metal that surrounds the inner core

23

inner core

solid dense ball of metal



26

Why is it sooooo important?

moves plates and changes earths surface

27

How does it work?

Heat from the core decrease the magma's density, making it light and rise up. When it reaches to the top, it cools down making it very dense. Because it is very dense,gravity pulls it down toward the core.

28

Where is the crust thick?

continental crust

29

where is the crust thin?

oceanic crust

30

have fun

dnt stress and do ur best