Earth Science - PowerPoint PPT Presentation

Loading...

PPT – Earth Science PowerPoint presentation | free to download - id: 709df6-N2E1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Earth Science

Description:

Earth Science Chapter One Mapping Earth s Surface – PowerPoint PPT presentation

Number of Views:63
Avg rating:3.0/5.0
Slides: 31
Provided by: Preferr435
Learn more at: http://www.myteacherpages.com
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Earth Science


1
Earth Science
  • Chapter One Mapping Earths Surface

2
Section One Exploring Earths Surface
  • Topography is the shape of the land. An areas
    topography may be mountainous, flat, sloping, or
    hilly. Topography is determined by elevation,
    relief, and landform.
  • Landforms this is the shape of Earths surface.
    All landforms have elevation and relief.

3
Landforms
  • There are three main types of landforms
  • Plains a landform made up of flat or gently
    rolling land with low relief. A plain that lies
    along a seacoast is called a coastal plain, with
    low elevation and a plain away from the coast
    is called an interior plain with both high or low
    elevations.
  • Mountains is a landform with high elevation and
    high relief. Mountains usually occur in a group
    called mountain ranges.
  • Plateau a landform that has high elevation and
    a more or less level surface. Streams and rivers
    usually cut into the plateaus surface this is
    why the surface is not smooth.

4
Plains, Mountains, and Plateaus
5
Landforms
6
Rocky Mountains
7
Canyons
  • The Grand Canyon

8
Sand Dunes
9
Volcanoes
10
Examples of Landforms
  • http//www.enchantedlearning.com/geography/landfor
    ms/glossary.shtml

11
Relief Map of New Jersey
12
Four Spheres
  • Scientists divide Earth into four spheres
  • Lithosphere LithoLand Earths solid, rocky
    outer layer. The lithosphere is made of the
    continents as well as smaller landmasses called
    island. The lithosphere included the entire
    ocean floor.
  • Atmosphere the outermost sphere, which includes
    a mixture of gases that surrounds the planet.
  • Hydrosphere Hydrowater this includes Earths
    lakes, rivers, oceans, and ice.
  • Biosphere Bioliving All living things in the
    air, oceans, or on and beneath land.

13
Animation of Spheres
  • http//www.classzone.com/books/earth_science/terc/
    content/visualizations/es0102/es0102page01.cfm?cha
    pter_no01

14
Earths Three Layers
  • Earth is made up of three layers.
  • The core is the center of the Earth. There is
    the inner core and the outer core.
  • The mantle is the thick layer that surrounds the
    core.
  • The Crust is the thin, outer layer made of rock.

15
Diagram of the Earths Layers
16
Section Two Mapping Earths Surface
  • A map is a model on a flat surface of all or part
    of Earths surface seen from above.
  • A globe is a sphere that represents Earths
    entire surface.
  • Symbols are used on a map with an explanation of
    their meaning symbols represent topography and
    other features on Earths surface. The map key
    lists all the symbols used on the map.

17
Map
18
Globe
19
Using a Map or Globe
  • Maps and globes show a grid based on two
    imaginary lines. Half way between the North and
    South poles is the equator. The equator divides
    Earth into the Northern Hemisphere and the
    Southern Hemisphere.
  • The second imaginary line is the prime meridian
    this line makes a half circle from the North Pole
    to the South Pole dividing the Earths surface
    into the Western Hemisphere and the Eastern
    Hemisphere.
  • We live in the North-Eastern Hemisphere.

20
Equator
21
Prime Meridian
22
Latitude/Longitude
  • The equator is the starting point for measuring
    latitude the distance in degrees north and
    south of the equator.
  • The distance in degrees east or west of the prime
    meridian is called longitude.

23
Map with longitude/latitude
  • Latitude Longitude

24
Longitude/Latitude
25
Section Three Maps in the Computer Age
  • Satellites are designed to observe Earths
    surface. Satellites use electronic devices to
    collect information about the land surface in the
    form of computer data Satellite images are
    pictures of the surface based on these data.
  • A Satellite image is made up of thousands of
    tiny dots called pixels.

26
Satellites
  • Image taken by a satellite in space

27
This image consists of 196 separate photographs
taken with a 6 megapixel digital camera, and then
stitched together into one seamless composite.
The final image is 40,784 x 26,800 pixels in
size, and contains about 1.09 billion pixels
28
Section Four Topographic Maps
  • A topographic map is a map showing the surface
    features of an area.
  • To represent elevation, relief, and slope on
    topographic maps, mapmakers use contour lines.
  • Closely spaced lines indicate a steep slope.
  • Widely spaced lines indicate gentle slopes.
  • A contour line that forms a closed loop with not
    other contour lines inside it indicates a hill.
  • A closed loop with dashes inside indicates a
    depression.
  • V-shaped contour lines pointing uphill indicate a
    valley.

29
Topographic Map
30
Examples of Contour Lines
About PowerShow.com